Copy filed from table based on Combo Box selection from one SharePoint list to another.

[tkshepley]

I am trying to copy data from one SharePoint list to another based on a combo box selection in a form.  This is what I am using however it does not seem to populate and write the data to the new list.  

LookUp('Admins', 'Administrator Email' = EnityDD.Selected.Value).'Administrator Email'

                List            list pulled from              drop down selection       list to put info in

Any help is greatly appreciated!