Don't execute a function if a routine is called outside the program

[salvomic]

hi,
there is a way to don't execute a command if a function is not called inside the program, but externally (EXPORT...)?

I've a code like this one:

Code:


EXPORT ascendant(...)
BEGIN
// routine...
  ch:= MSGBOX("Another calculation?", 1);
  IF (ch<>0)  THEN changeData(); END;
END;

I would like to execute changeData(); only if ascendant() is called inside a program (to return to its menu, and so on) but not when the function is called externally (passing parameters...).

In other words: the function should ask itself: "who is calling?"...

Thank you

Salvo