thank you very much for reply.
i understand what you mean. this will work certainly. I had not thought of this possibility.
i will also happy to do it with API if possible. using API in automation could be helpful for other things too, but i'm novice in .NET framework and i don't know how to do it. i searched on web for days but nothing useful found.
could you, or someone else, suggest a little example or the right keywords to search on web about that?