When using the %%Perform macro it may be necessary to clear the %%NotOK signal returned, so that the calling action logic can report success. This macro does this. To check the signal status, examine the system variable that can be accessed through the macro %%OK. If its value is false, the performed action executed the macro %%NotOK before quitting.
I MyVar<Yours %%IsOK Q
In action logic of a GUI Text control for the low-level
event lostFocus,
report success when two values compare in the required manner.