Conditional Visibility Not Working

[PaulBappoo]

I have a field called Payment Received Date content linked to a shared field Payment Received Date

I added a button next to it, which is supposed to be visible when the field is blank, so I added this formula, which successfully evaluates to true or false, depending on the data in the field.

Yet in the app, the button remains invisible regardless of data being present in the field or not

[PaulBappoo]

SOLVED: The comparison value needs to be in a single pair of double quotes, not a double pair. Setting it to =$[Payment Received Date content]="" works fine