Using ArcGIS Pro 3.1.0
I'd like to create a model that iterates through features and modifies fields based on a logical if-statement. Specifically, I'd like to check if each field begins with number, and if it does, add a prefix to the field. Here's what I have in ModelBuilder so far:
I input the sample data, use Iterate Feature Selection to pick individual features, and use a logical If Field Value Is statement to check if the first character of the field is a numeric value (0-9). This logical statement is a precondition for Calculate Field, which adds the desired prefix to the field.
My sample data:
When I verify and run this model, regardless of what logical statement I use, Calculate Field runs against every feature in Sample_Data:
Why isn't the precondition preventing the Calculate Field from running?
