I'm labeling a layer dinamicaly with 2 fields selcted by user. I create a labelExpression like that:
[FIELD1] CONCAT [FIELD2]
When the user selects 2 required fields the labeling works great. When the user selects 1 required field and 1 not required field the label don't show for all features. I think because FIELD2 in the second case has null values.
Any help will be apreciated.