I have a form that is built based off a SharePoint list. I added a Dropdown control to sort, distinct, filter selection based on another table.
The form works except for the new dropdown doens't populate the list with the selection but show the default "-" option.
Not sure what I've done wrong and why it's not populating the selection.

This is the screen shot of dropdown and the formula.
I need this selection to update the list Plaid Card Log List. Specifically the Plant Location Choice Field.

I did not create this original list, I'm trying however to make it so that a user once they select the facility, gets a limited list of Plant Locations to select from for that facility.
Any help is appreciated.
Thank you