HIDING helper gates once they are shown?

[cfrag]

I'm showing some helper gates for a tutorial. Now I want to optionally hide the gates, i.e. when the pilot clicks a button or selects a radio item) I want to hide the gates. I'm aware that if I turn that around (show them on request, and do not show them by default) I can have almost the same functionality. But having the ability to optionally disabling helper gates would be the icing on the cake.

 

I've tried to resetting the flag that is associated with 'SHOW HELPER GATES FOR UNIT' to false, but the gates stay. 

 

Thank you for any pointers.