In what way does it fail?
The hover state executes, but the drop down list does not appear when I click in the field. I am in find mode when I use this layout.
Ok and find mode is the cause. You cannot edit values in global fields when in Find Mode. That's because you can't specify search criteria that will find records in a global field.
Select the value from your drop down, then enter find mode to perform your find and you'll find that you can enter data into your global field.
If you are trying to set up a global field so that the user can enter criteria for a script to use to perform a find, you may find the script examples in the following thread to be helpful: Scripted Find Examples
So kind of you to help me with this! I really appreciate it. I could not figure this out on my own. Works like a charm now.