Automation - Trying to "copy value from another field" but no options for values appear

I am setting up an Automation in which the action fills a field using the option "copy value from another field." The field I am trying to fill is a date field named "Date Immediate Needs Addressed". When I try to specify a value nothing appears. I am sure I am missing something obvious, but after reading through QuickBase guidance I'm still unsure. (I've also tried choosing other fields under Field, but still no options appear under Value.)

Thoughts? Why can't I select a Value? 



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Chyanne
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