I evidently did not describe my question well. I apologize for that

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I need the data selected in my list box to populate elsewhere on the template/document.
Currently I have two boxes (one was copied from the other). is it possible to have the value selected in one populate into the other? If so, how? and If not can I do a similar thing with a different tool?
I have attached an example of what I have done so far.
Thanks for looking and for any input.