You have at least two options:

ON KEY LABEL ESC thisform.release

Or, a much better solution is to put this in the KeyPress event method

if nKeyCode = 27 
   thisform.release
endif

Personally I give my customers a last chance to regret, with a timeout. This also goes into the KeyPress event method

DO CASE
   CASE nKeyCode = 27	&&Escape
      IF MESSAGEBOX('Do you really want to exit the program?',4+16+256,'Obs!',5000)=6
	 thisform.Release()
      ENDIF
   CASE morestuff..
ENDCASE

>ok, thanks I will try and let you know
>by the way...i have a problem with on escape too...i want to release a form when I press ESC.have any ideea