Are you sure the external program is being executed successfully at all? When I use:
proc test
run notepad
?"hello"
endproc
it works properly. If you are running a DOS program and there is not enough memory then it'll just flash by without doing anything as I know from personal experience.

>when I normally use run command my program doesn't wait for the end of
>external program. I think that when I use run command without /N option
>it should wait.
>any ideas ?