# Unable to use variable for xUnit Assembly
**URL:** https://www.finalbuilder.com/forums/t/unable-to-use-variable-for-xunit-assembly/3492
**Category:** Bugs
**Created:** [May 21, 2013, 11:01am UTC](https://www.finalbuilder.com/forums/t/unable-to-use-variable-for-xunit-assembly/3492 "2013-05-21T11:01:18Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@stcu](https://www.finalbuilder.com/forums/u/stcu)
#### Post date: [May 21, 2013, 11:01am UTC](https://www.finalbuilder.com/forums/t/unable-to-use-variable-for-xunit-assembly/3492/1 "2013-05-21T11:01:18Z")
When I use a variable (TestDLL) for the Assembly File of an xUnit task, I get the error message “error: file not found: %TestDLL%”, so I’m not able to use a Fileset Iterator to loop over our xUnit assemblies.
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### Author:  [@nevar](https://www.finalbuilder.com/forums/u/nevar)
#### Post date: [May 22, 2013, 6:45am UTC](https://www.finalbuilder.com/forums/t/unable-to-use-variable-for-xunit-assembly/3492/2 "2013-05-22T06:45:55Z")
Hi SD,
Your build is available.
[http://downloads.finalbuilder.com/downloads/finalbuilder/700/FB700\_2286.exe](http://downloads.finalbuilder.com/downloads/finalbuilder/700/FB700_2286.exe)
Please let us know how you go.
Regards,
Jason
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### Author:  [@stcu](https://www.finalbuilder.com/forums/u/stcu)
#### Post date: [May 22, 2013, 6:35am UTC](https://www.finalbuilder.com/forums/t/unable-to-use-variable-for-xunit-assembly/3492/3 "2013-05-22T06:35:25Z")
Hey, great! It works as expected now! Thanks for your remarkably quick fix!
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### Author:  [@nevar](https://www.finalbuilder.com/forums/u/nevar)
#### Post date: [May 23, 2013, 12:50pm UTC](https://www.finalbuilder.com/forums/t/unable-to-use-variable-for-xunit-assembly/3492/4 "2013-05-23T12:50:35Z")
More than welcome and thanks for checking back in with us. Great to hear its working as expected.