Collection Add

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Hi, I want to make a modification to collection_add.php, I need to add some things after the new page type is selected. So once the user clicks on the page type I want to be able to do:

If New Page Type = "full" do something

or

if New Page Type = "right sidebar" do something else

I haven't been able to find a value for the new page type once it is selected. Anyone know how I can do this?

Thanks

pvernaglia