Masking dynamic text

my questions i simple really, problem is i have a mask tweened so that i opens along side a window…but thats not the point. the maskied layer is supposed to have a dynamic text box with a scroll bar. but when i run it and the mask opens up all the way all i see is the scrll bar.

it works with static text though so im thinking maybe i shouldnt externally load the text…

eh?
I tot my solutions was rite???