You make it seem too easy. That was a great solution. Thanks!

>I forgot that Valid() wouldn't fire if checkbox status didn't change. Try
>

>* WHEN
>DO CASE
>CASE EMPTY(ON("KEY", "ENTER"))
>	ON KEY LABEL ENTER KEYBOARD "{TAB}" CLEAR
>CASE LASTKEY() = 13
>	ON KEY LABEL ENTER
>ENDCASE	
>...
>

>
>>Because I'm trying it and the ENTER key does not work in the screen after the WHEN turns it off.
>>