>>When i created a single form and build an executable from the form, i got an error message "Feature not available".
>>What feature exactly isn't available ?
>>How can i handle this ?
>
>This is usually from a SET STEP ON left in the code, but can be caused by other commands like MODIFY STRUCTURE, MODIFY DATA, etc.

or a CANCEL or SUSPEND. A good error handler will give the method and line number where the error is occuring. In VFP, there is no need to enter commands like CANCEL, SUSPEND, or SET STEP ON. In the editor, right-click on the line of code where you want to SUSPEND, then select Set Breakpoint. Or just enter the method name in the Breakpoint dialog in the debugger.