diff --git a/packages/bruno-app/src/providers/ReduxStore/slices/collections/index.js b/packages/bruno-app/src/providers/ReduxStore/slices/collections/index.js
index 01a5f083..75f55643 100644
--- a/packages/bruno-app/src/providers/ReduxStore/slices/collections/index.js
+++ b/packages/bruno-app/src/providers/ReduxStore/slices/collections/index.js
@@ -183,7 +183,7 @@ export const collectionsSlice = createSlice({
       }
     },
     scriptEnvironmentUpdateEvent: (state, action) => {
-      const { collectionUid, environment, collectionVariables } = action.payload;
+      const { collectionUid, envVariables, collectionVariables } = action.payload;
       const collection = findCollectionByUid(state.collections, collectionUid);
 
       if (collection) {
@@ -191,7 +191,7 @@ export const collectionsSlice = createSlice({
         const activeEnvironment = findEnvironmentInCollection(collection, activeEnvironmentUid);
 
         if (activeEnvironment) {
-          forOwn(environment, (value, key) => {
+          forOwn(envVariables, (value, key) => {
             const variable = find(activeEnvironment.variables, (v) => v.name === key);
 
             if (variable) {
@@ -201,7 +201,6 @@ export const collectionsSlice = createSlice({
         }
 
         collection.collectionVariables = collectionVariables;
-
       }
     },
     requestCancelled: (state, action) => {
diff --git a/packages/bruno-electron/package.json b/packages/bruno-electron/package.json
index 9994ee14..bb426792 100644
--- a/packages/bruno-electron/package.json
+++ b/packages/bruno-electron/package.json
@@ -13,7 +13,7 @@
     "pack-app": "electron-builder --dir"
   },
   "dependencies": {
-    "@usebruno/js": "0.1.0",
+    "@usebruno/js": "0.2.0",
     "@usebruno/lang": "0.2.2",
     "@usebruno/schema": "0.3.1",
     "axios": "^0.26.0",
diff --git a/packages/bruno-electron/src/app/watcher.js b/packages/bruno-electron/src/app/watcher.js
index 4fdaad7b..988b00bf 100644
--- a/packages/bruno-electron/src/app/watcher.js
+++ b/packages/bruno-electron/src/app/watcher.js
@@ -42,6 +42,7 @@ const hydrateRequestWithUuid = (request, pathname) => {
   const headers = _.get(request, 'request.headers', []);
   const requestVars = _.get(request, 'request.vars.req', []);
   const responseVars = _.get(request, 'request.vars.res', []);
+  const assertions = _.get(request, 'request.assertions', []);
   const bodyFormUrlEncoded = _.get(request, 'request.body.formUrlEncoded', []);
   const bodyMultipartForm = _.get(request, 'request.body.multipartForm', []);
 
@@ -49,6 +50,7 @@ const hydrateRequestWithUuid = (request, pathname) => {
   headers.forEach((header) => header.uid = uuid());
   requestVars.forEach((variable) => variable.uid = uuid());
   responseVars.forEach((variable) => variable.uid = uuid());
+  assertions.forEach((assertion) => assertion.uid = uuid());
   bodyFormUrlEncoded.forEach((param) => param.uid = uuid());
   bodyMultipartForm.forEach((param) => param.uid = uuid());
 
diff --git a/packages/bruno-electron/src/ipc/network/index.js b/packages/bruno-electron/src/ipc/network/index.js
index 5a15f4d4..0e669fef 100644
--- a/packages/bruno-electron/src/ipc/network/index.js
+++ b/packages/bruno-electron/src/ipc/network/index.js
@@ -3,7 +3,7 @@ const Mustache = require('mustache');
 const FormData = require('form-data');
 const { ipcMain } = require('electron');
 const { forOwn, extend, each, get } = require('lodash');
-const { ScriptRuntime, TestRuntime } = require('@usebruno/js');
+const { VarsRuntime, AssertRuntime, ScriptRuntime, TestRuntime } = require('@usebruno/js');
 const prepareRequest = require('./prepare-request');
 const prepareGqlIntrospectionRequest = require('./prepare-gql-introspection-request');
 const { cancelTokens, saveCancelToken, deleteCancelToken } = require('../../utils/cancel-token');
@@ -96,13 +96,27 @@ const registerNetworkIpc = (mainWindow, watcher, lastOpenedCollections) => {
 
       const envVars = getEnvVars(environment);
 
+      // run pre-request vars
+      const preRequestVars = get(request, 'vars.req', []);
+      if(preRequestVars && preRequestVars.length) {
+        const varsRuntime = new VarsRuntime();
+        const result = varsRuntime.runPreRequestVars(preRequestVars, request, envVars, collectionVariables, collectionPath);
+
+        mainWindow.webContents.send('main:script-environment-update', {
+          envVariables: result.envVariables,
+          collectionVariables: result.collectionVariables,
+          collectionUid
+        });
+      }
+
+      // run pre-request script
       const requestScript = get(request, 'script.req');
       if(requestScript && requestScript.length) {
         const scriptRuntime = new ScriptRuntime();
         const result = scriptRuntime.runRequestScript(requestScript, request, envVars, collectionVariables, collectionPath);
 
         mainWindow.webContents.send('main:script-environment-update', {
-          environment: result.environment,
+          envVariables: result.envVariables,
           collectionVariables: result.collectionVariables,
           collectionUid
         });
@@ -127,18 +141,33 @@ const registerNetworkIpc = (mainWindow, watcher, lastOpenedCollections) => {
 
       const response = await axios(request);
 
+      // run post-response vars
+      const postResponseVars = get(request, 'vars.res', []);
+      if(postResponseVars && postResponseVars.length) {
+        const varsRuntime = new VarsRuntime();
+        const result = varsRuntime.runPostResponseVars(postResponseVars, request, response, envVars, collectionVariables, collectionPath);
+
+        mainWindow.webContents.send('main:script-environment-update', {
+          envVariables: result.envVariables,
+          collectionVariables: result.collectionVariables,
+          collectionUid
+        });
+      }
+
+      // run post-response script
       const responseScript = get(request, 'script.res');
       if(responseScript && responseScript.length) {
         const scriptRuntime = new ScriptRuntime();
         const result = scriptRuntime.runResponseScript(responseScript, request, response, envVars, collectionVariables, collectionPath);
 
         mainWindow.webContents.send('main:script-environment-update', {
-          environment: result.environment,
+          envVariables: result.envVariables,
           collectionVariables: result.collectionVariables,
           collectionUid
         });
       }
 
+      // run tests
       const testFile = get(item, 'request.tests');
       if(testFile && testFile.length) {
         const testRuntime = new TestRuntime();
@@ -284,18 +313,27 @@ const registerNetworkIpc = (mainWindow, watcher, lastOpenedCollections) => {
             request.data = form;
           }
 
+          // run pre-request vars
+          const preRequestVars = get(request, 'vars.req', []);
+          if(preRequestVars && preRequestVars.length) {
+            const varsRuntime = new VarsRuntime();
+            varsRuntime.runPreRequestVars(preRequestVars, request, envVars, collectionVariables, collectionPath);
+          }
+
+          // run pre-request script
           const requestScript = get(request, 'script.req');
           if(requestScript && requestScript.length) {
             const scriptRuntime = new ScriptRuntime();
             const result = scriptRuntime.runRequestScript(requestScript, request, envVars, collectionVariables, collectionPath);
     
             mainWindow.webContents.send('main:script-environment-update', {
-              environment: result.environment,
+              envVariables: result.envVariables,
               collectionVariables: result.collectionVariables,
               collectionUid
             });
           }
 
+          // interpolate variables inside request
           interpolateVars(request, envVars, collectionVariables);
 
           // todo:
@@ -312,17 +350,26 @@ const registerNetworkIpc = (mainWindow, watcher, lastOpenedCollections) => {
             ...eventData
           });
 
+          // send request
           timeStart = Date.now();
           const response = await axios(request);
           timeEnd = Date.now();
 
+          // run post-response vars
+          const postResponseVars = get(request, 'vars.res', []);
+          if(postResponseVars && postResponseVars.length) {
+            const varsRuntime = new VarsRuntime();
+            varsRuntime.runPostResponseVars(postResponseVars, request, response, envVars, collectionVariables, collectionPath);
+          }
+
+          // run response script
           const responseScript = get(request, 'script.res');
           if(responseScript && responseScript.length) {
             const scriptRuntime = new ScriptRuntime();
             const result = scriptRuntime.runResponseScript(responseScript, request, response, envVars, collectionVariables, collectionPath);
 
             mainWindow.webContents.send('main:script-environment-update', {
-              environment: result.environment,
+              envVariables: result.envVariables,
               collectionVariables: result.collectionVariables,
               collectionUid
             });
diff --git a/packages/bruno-electron/src/ipc/network/prepare-request.js b/packages/bruno-electron/src/ipc/network/prepare-request.js
index 48dd393f..ef2feb45 100644
--- a/packages/bruno-electron/src/ipc/network/prepare-request.js
+++ b/packages/bruno-electron/src/ipc/network/prepare-request.js
@@ -63,6 +63,9 @@ const prepareRequest = (request) => {
     axiosRequest.script = request.script;
   }
 
+  axiosRequest.vars = request.vars;
+  axiosRequest.assertions = request.assertions;
+
   return axiosRequest;
 };
 
diff --git a/packages/bruno-js/src/runtime/script-runtime.js b/packages/bruno-js/src/runtime/script-runtime.js
index 77a2b274..39ce6b1b 100644
--- a/packages/bruno-js/src/runtime/script-runtime.js
+++ b/packages/bruno-js/src/runtime/script-runtime.js
@@ -17,8 +17,8 @@ class ScriptRuntime {
   constructor() {
   }
 
-  runRequestScript(script, request, environment, collectionVariables, collectionPath) {
-    const bru = new Bru(environment, collectionVariables);
+  runRequestScript(script, request, envVariables, collectionVariables, collectionPath) {
+    const bru = new Bru(envVariables, collectionVariables);
     const req = new BrunoRequest(request);
 
     const context = {
@@ -47,13 +47,13 @@ class ScriptRuntime {
 
     return {
       request,
-      environment,
+      envVariables,
       collectionVariables
     };
   }
 
-  runResponseScript(script, request, response, environment, collectionVariables, collectionPath) {
-    const bru = new Bru(environment, collectionVariables);
+  runResponseScript(script, request, response, envVariables, collectionVariables, collectionPath) {
+    const bru = new Bru(envVariables, collectionVariables);
     const req = new BrunoRequest(request);
     const res = new BrunoResponse(response);
 
@@ -84,7 +84,7 @@ class ScriptRuntime {
 
     return {
       response,
-      environment,
+      envVariables,
       collectionVariables
     };
   }
diff --git a/packages/bruno-js/src/runtime/test-runtime.js b/packages/bruno-js/src/runtime/test-runtime.js
index cbb1050f..8ad12603 100644
--- a/packages/bruno-js/src/runtime/test-runtime.js
+++ b/packages/bruno-js/src/runtime/test-runtime.js
@@ -20,8 +20,8 @@ class TestRuntime {
   constructor() {
   }
 
-  runTests(testsFile, request, response, environment, collectionVariables, collectionPath) {
-    const bru = new Bru(environment, collectionVariables);
+  runTests(testsFile, request, response, envVariables, collectionVariables, collectionPath) {
+    const bru = new Bru(envVariables, collectionVariables);
     const req = new BrunoRequest(request);
     const res = new BrunoResponse(response);
 
@@ -60,7 +60,7 @@ class TestRuntime {
 
     return {
       request,
-      environment,
+      envVariables,
       collectionVariables,
       results: __brunoTestResults.getResults()
     };
diff --git a/packages/bruno-js/src/runtime/vars-runtime.js b/packages/bruno-js/src/runtime/vars-runtime.js
index fdc07d38..dd651d52 100644
--- a/packages/bruno-js/src/runtime/vars-runtime.js
+++ b/packages/bruno-js/src/runtime/vars-runtime.js
@@ -1,7 +1,7 @@
 const _ = require('lodash');
 const Bru = require('../bru');
 const BrunoRequest = require('../bruno-request');
-const { evaluateJsExpression, createResponseParser } = require('../utils');
+const { evaluateJsTemplateLiteral, evaluateJsExpression, createResponseParser } = require('../utils');
 
 class VarsRuntime {
   runPreRequestVars(vars, request, envVariables, collectionVariables, collectionPath) {
@@ -25,9 +25,13 @@ class VarsRuntime {
     }
 
     _.each(enabledVars, (v) => {
-      const value = evaluateJsExpression(v.value, context);
+      const value = evaluateJsTemplateLiteral(v.value, context);
       bru.setVar(v.name, value);
     });
+
+    return {
+      collectionVariables
+    };
   }
 
   runPostResponseVars(vars, request, response, envVariables, collectionVariables, collectionPath) {
@@ -56,6 +60,11 @@ class VarsRuntime {
       const value = evaluateJsExpression(v.value, context);
       bru.setVar(v.name, value);
     });
+
+    return {
+      envVariables,
+      collectionVariables
+    };
   }
 }
 
diff --git a/packages/bruno-js/src/utils.js b/packages/bruno-js/src/utils.js
index 26292690..04fe7126 100644
--- a/packages/bruno-js/src/utils.js
+++ b/packages/bruno-js/src/utils.js
@@ -60,6 +60,46 @@ const evaluateJsExpression = (expression, context) => {
   return fn(context);
 };
 
+const evaluateJsTemplateLiteral = (templateLiteral, context) => {
+  if(!templateLiteral || !templateLiteral.length || typeof templateLiteral !== 'string') {
+    return templateLiteral;
+  }
+
+  templateLiteral = templateLiteral.trim();
+
+  if(templateLiteral === 'true') {
+    return true;
+  }
+
+  if(templateLiteral === 'false') {
+    return false;
+  }
+
+  if(templateLiteral === 'null') {
+    return null;
+  }
+
+  if(templateLiteral === 'undefined') {
+    return undefined;
+  }
+
+  if(templateLiteral.startsWith('"') && templateLiteral.endsWith('"')) {
+    return templateLiteral.slice(1, -1);
+  }
+
+  if(templateLiteral.startsWith("'") && templateLiteral.endsWith("'")) {
+    return templateLiteral.slice(1, -1);
+  }
+
+  if(!isNaN(templateLiteral)) {
+    return Number(templateLiteral);
+  }
+
+  templateLiteral = "`" + templateLiteral + "`";
+
+  return evaluateJsExpression(templateLiteral, context);
+};
+
 const createResponseParser = (response = {}) => {
   const res = (expr, ...fns) => {
     return get(response.data, expr, ...fns);
@@ -80,6 +120,7 @@ const createResponseParser = (response = {}) => {
 
 module.exports = {
   evaluateJsExpression,
+  evaluateJsTemplateLiteral,
   createResponseParser,
   internalExpressionCache
 };
\ No newline at end of file