Issue with Nintex rule for validation

Hi All,

I am working on Nintex form where I need to disable/Enable few controls depending on few controls value.

I am using external javascript file to validate the current scenario and assigning  value to flag as shown below.

$('#'+Flag).val('yes');

I am using above flag value to hide/disable the controls on the form. 

Flag value is getting set after the  form gets loaded.  

When I use Nintex runtime functions, it does not work consistently.

Has anybody fixed such issues? Please help.

Thanks,

Prashant