What do you mean by "when i click on help" is this a button or a menu item in your application. What code is behind this click to make the help launch?
You should have something like:

LPARAMETERS cHelpPath, cHelpTopic
SET HELP on
SET HELP to alltrim(m.cHelpPath)
SET TOPIC TO alltrim(m.cHelpTopic)
HELP

to make the help launch