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Trouble updating primefaces component w/ajax

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Hello! I'm basically building a file manager and using a PrimeFaces dataTable to output a list of the users' directories/files. I'm trying to allow a user to create a new folder using a modal window, and would like it to append the new row to the dataTable upon a successful request. So far, everything is working server-side, but I can't seem to append the changes to the dataTable without a refresh. I feel like I'm missing something simple and was hoping that one of you all might be able to point out my mistake.

Here is the xHTML...

and finally the backing bean method that is called....

Jim Rocard
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Figured it out... I'm not updating the list used to populate my dataTable after insert, therefore it's not being sent in the response. Pretty easy fix for anyone that falls into the same trap.
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