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I'm not sure if this is your problem, but try and place a character in a map with the following code:
pbChangePlayer(0) for a boy or
pbChangePlayer(1) for a girl.
Create a new event, go to the last page and the last option should be script. Add this code in there. If you get a syntax error go to show thread, show printable version.
If this doesn't work, reply back and I'll play around a bit and see what can be done.