How to run an IF/ELSE function on many data variables with one Data Event?

In my workflow in K2 Studio, I'm trying to perform an IF... THEN... function on 30 data fields. Is there a smarter way I can do this than by creating 30 IF... THEN... entries?

Ideally, the logic would look like this

IF (DataField == 'true') THEN {DataField = '<b>' + DataField + '</b>'}

I'm using K2 Designer and K2 Studio.

Thank you!