Hey!
Check this out!!

I solved it doing this:
On my main program:
On key label f1 help && As Barbara said...

On all my forms' Activate event:
THISFORM.TAG=PROMPT()
_xmacro="SET TOPIC TO '"+THISFORM.TAG+"'"
&_XMACRO

On all my forms' Unload event:
SET TOPIC TO "Introducción" && Remember I'm from Venezuela :-)


Solved!!!