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Help needed with swapping lists  RSS feed

 
Paul Smiley
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This is the most bizarre thing and I can't seem to get it. Any help would be appreciated.

I am swapping lists of items - SelectItems with command buttons moving things from one box to the other. Moving an item from the left box to the right is no problem
(using a technique similar to http://jsf.iatp.org.ua/index.html - caution: slow link)
In every instance, moving from the right list to the left one fails. the code is exactly the same. When I select something in the right box, I get a null list created. I'm stumped.
 
Gregg Bolinger
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Chrome IntelliJ IDE Mac OS X
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Code might help.
 
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