How to checks if a column exists and do 2 different actions if yess or not

Hi,

If have a project where i receive data in tables and a column is weather in kg or tons. I already changed the columns names so it is weather Poidskg or Poidstonnes, then, i need to change tons to kg but i can’t find how to use 2 different paths : one to divide data if it’s in tons (and change name to Poids_kg) and another to do nothing if it’s already in kg. I’ve tried differents switches but nothing worked.

I’m new to Knime and everything’s pretty hard to urderstand :confused: