Clearing an image field

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i have created image field user can select via checkbox.  image field hidden default.  if user clicks checkbox field becomes visible.  clicking field allows user embed image. 

i attempting set "clear image" action, reason if set image field rawvalue null image field disappears , not come back.  command associating button is:

 

copqimage.rawvalue = null;

 

this makes field disappear if reset hidden, , clicking check box attach image not bring field back.  bug, or there else needs happen image field if set it's rawvalue null?

look up!

 

http://forums.adobe.com/thread/703156



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