>Dear all,
>
>Is there a simple method which call a help file of my application MyHelp.chm by implementing a commandbutton within my form.
>
>How the code the click event of the commnadbutton?

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You can do this in the Click event.

local lcHelp
lcHelp = set("HELP", 1)
set help to "\MYHELP.CHM"
help
set help to (lcHelp)

HTH,