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How to limit selections with s:optiontransferselect & struts 2.1

E Robb
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I am using 's:optiontransferselect' for a "basket selection". I am wondering if there is any way to limit number of selections that can be moved to the other "basket". I would like to use the existing struts framework. Is there something existing in the frame work that would say limit my choices to 3 selections?

Here is my current code:

On a side note to the moderater I find it really annoying I cant use 'sptiontransferselect' but am forced to use the ampersign #58 to achieve s:option without getting Emoticons.

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