# Variable airfoils using the MulTabLoc USER function

**URL:** <https://forums.nlr.gov/t/variable-airfoils-using-the-multabloc-user-function/1006>\
**Category:** Computer-Aided Engineering Software Tools\
**Created:** [October 1, 2014, 9:18am UTC](https://forums.nlr.gov/t/variable-airfoils-using-the-multabloc-user-function/1006 "2014-10-01T09:18:11Z")\
**Posts on this page:** 1\
**Showing post:** 13

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**Author:** ![Srinivasa.Sudharsan](https://avatars.discourse-cdn.com/v4/letter/s/9de053/32.png) [@Srinivasa.Sudharsan](https://forums.nlr.gov/u/Srinivasa.Sudharsan)\
**Post date:** [July 25, 2016, 7:34am UTC](https://forums.nlr.gov/t/variable-airfoils-using-the-multabloc-user-function/1006/13 "2016-07-25T07:34:13Z")

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Hi Mr.Xiao,  
I am trying to enable flapcntrl as per your post but when i compile i get the following error as in buildlog kindly help me in rectifying it :  
[buildlog.txt](https://forums.nlr.gov/uploads/short-url/hv7aGpSD5Z0VpcRDziAbfxFazDs.txt) (18.9 KB)

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