imagebrowser reloadData behaves weird

Question

There's a delegate object for my imagebrowser imageDelegate

and I try to reload all data from outside of it by calling:

[imageDelegate reload];

in it, I add images to an array and call [imageBrowser reloadData]

I am sure images are added to array but the imagebrowser keeps being blank.

(I set animates to it already)

But when I call reload by clicking on a button, it works...

I think it's cuz sent Action call some functions to refresh the browser...

anybody knows what should I do to really "reload" the browser?

Thanks!