In the distributed app, does the chm fire when F1 is pressed?

>I am using SET HELP To filename.CHM
>
>>How are you launching the help file from within the Fox app? If you are using a RUN command, try substituting just HELP and see if it will work.
>>
>>>Hi
>>>
>>>We have .chm help file and use the SET HELP To filename.CHM.
>>>
>>>After distribution the application, Help work on some machines and does not work on other machines. anyone have this problem?
>>>
>>>On the machines that does not works, the .CHM will work if the user double click on the .CHM file in windows explorer but not from inside the application.
>>>
>>>I am using vfp7 but it happened when used vfp6 also.
>>>
>>>Mo