Scroll bar does not work when creating a datalist

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so created simple vertical scrollbar 2 stretched rectangles (a thumb , track). grouped text field , square together, make list items.

next, selected scrollbar , list item, , created data list them. when tested project, however, move scrollbar without problems, items in list did not move. tried adding more items list, didn't either.

then tried using component flash catalyst, instead of "home-made" scrollbar. making data list out of this, , testing project gave desired result.

i'd use own made scrollbar here, , have feeling missed obvious on way forgot.

 

note: checked several times if had forgotton "edit parts" of scrollbar , data list, had selected parts required.

i had problem once, , realized had converted artwork horizontal slider component when should have been using horizontal >scrollbar<.  went , converted slider artwork, converted scrollbar, made data list , scrolling feature worked.



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