I get "Entry point Help not found" error when using the following code in my click event:

SET LIBRARY TO SYS(2004) + "FOXTOOLS.FLL" ADDITIVE
Help = RegFn("Help", "LCIC", "I")
#DEFINE HELP_KEY 0x0101
wCmd = HELP_KEY
cFilename = "mqhelp.hlp"
dwData = "Add Menu Items at Run Time"
CallFn(HELP, MainHWND(), cFilename, wCmd, dwData)

Any ideas please?

Thanks,
Paul