Hi @Eric_D_Miller,
The value returned looks like it is an empty array
And the filter is looking for a value that is not null. To make this work, you'll want to update the filter operator. In the filter, select the operator, then scroll down and select "Array length greater than"*. Next, put a "0" (zero) in the value.
* You could also use the operator: "Array length not equal to"
Hopefully that helps with what you need.
Best regards,
Dan