binding to arraycollection does not work

Posted by ron on Stack Overflow See other posts from Stack Overflow or by ron
Published on 2010-05-23T14:34:57Z Indexed on 2010/05/23 14:40 UTC
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Hi, I am using flex SDK 3.5. I have model.as and in it i have an ArrayCollection (name it arr_mod) which is Bindable. From my mxml i link to this arr_mod in two ways:
1) in DataGrid i set dataprovider={arr_mode} ...
2) in Button i add new item to the arr_mod this way:


3) in textBox i want to add mx:TextBox text="{mySpecialCounterFunc(arr_mod)}" note that in the Script of mxml arr_mod is Bindable as well as in the class definition in model.as

The problem is, that when clicking on button, mySpecialCounterFunc is not called! it should be called, since i use {} and this should listen to changes in arr_mod (a change that was made in the button should cause a new item to be added.. and than the listener to respond).
While The DataGrid is updated correctly!
Why??

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