# FBVariables in JavaScript from FinalBuilder8
**URL:** https://www.finalbuilder.com/forums/t/fbvariables-in-javascript-from-finalbuilder8/6463
**Category:** Discussion
**Created:** [April 11, 2019, 11:20am UTC](https://www.finalbuilder.com/forums/t/fbvariables-in-javascript-from-finalbuilder8/6463 "2019-04-11T11:20:06Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@yuryleon77](https://www.finalbuilder.com/forums/u/yuryleon77)
#### Post date: [April 11, 2019, 11:20am UTC](https://www.finalbuilder.com/forums/t/fbvariables-in-javascript-from-finalbuilder8/6463/1 "2019-04-11T11:20:06Z")
Good day! I use FinalBuilder 8, I try to execute a script (Run Script) in JavaScript with the following code:
```javascript
ActionResult = false;
FBVariables.AppDir = GetPathBrowseParent (FBVariables.FBPROJECTDIR);
ActionResult = (FBVariables.AppDir! = '');
```
Knocks the error “FBVariables are assumed to be present”. That is, JS does not understand who FBVariables are. Where have I not set up?
thank
---
### Author:  [@Vincent](https://www.finalbuilder.com/forums/u/Vincent)
#### Post date: [April 11, 2019, 11:07pm UTC](https://www.finalbuilder.com/forums/t/fbvariables-in-javascript-from-finalbuilder8/6463/2 "2019-04-11T23:07:20Z")
Where does GetPathBrowseParent come from.
If I take that out, the script runs fine
```javascript
ActionResult = false;
FBVariables.AppDir = FBVariables.FBPROJECTDIR;
ActionResult = (FBVariables.AppDir != '');
```
---
### Author:  [@yuryleon77](https://www.finalbuilder.com/forums/u/yuryleon77)
#### Post date: [April 12, 2019, 8:43pm UTC](https://www.finalbuilder.com/forums/t/fbvariables-in-javascript-from-finalbuilder8/6463/3 "2019-04-12T20:43:15Z")
This code does not work. It seems that the compiler does not understand the FBVariables variable. Maybe something is not specified in the settings?
---
### Author:  [@Vincent](https://www.finalbuilder.com/forums/u/Vincent)
#### Post date: [April 13, 2019, 12:25am UTC](https://www.finalbuilder.com/forums/t/fbvariables-in-javascript-from-finalbuilder8/6463/4 "2019-04-13T00:25:09Z")
What build of FB8 are you using? I literally just copied the code from the forums and pasted it in FB and apart from GetPathBrowseParent it ran fine.
---
### Author:  [@yuryleon77](https://www.finalbuilder.com/forums/u/yuryleon77)
#### Post date: [April 13, 2019, 5:55pm UTC](https://www.finalbuilder.com/forums/t/fbvariables-in-javascript-from-finalbuilder8/6463/5 "2019-04-13T17:55:00Z")
Build version of Funal Builder - 8.0.0.2523
Trial Version
---
### Author:  [@Vincent](https://www.finalbuilder.com/forums/u/Vincent)
#### Post date: [April 15, 2019, 12:53pm UTC](https://www.finalbuilder.com/forums/t/fbvariables-in-javascript-from-finalbuilder8/6463/6 "2019-04-15T12:53:30Z")
Send your project file to support @ [finalbuilder.com](http://finalbuilder.com) and we’ll see if we can reproduce the error, we must be missing some detail.