Flash CS4 question, using AS3?

OK here is the rundown.

Frame 1 has a dynamic textbox that says T-shirt. Frame 2 has a dynamic textbox with nothing in it. When I click a button on Frame 1 I want it to direct you to frame 2 and change the textbox in Frame 2 to say the same text that is in the textbox on frame 1 (“T-Shirt”). For whatever reason when I export the swf it says “Error #1009 Cannot access a property or method of a null object reference.”

However when I tell a textbox on frame 1 to change to say T-Shirt it works… and if I manually tell it to direct to frame 2 and insert “hello” in the textbox it works. It just won’t pull the textbox value from frame 1 – how do I get it to do this??