Find and replace string in material names

I use a prefix to identify materials created by my company, so I can easily find and delete other materials. I’d like to change the prefix from ‘CIP-’ to ‘*’

Here’s my attempt at a graph, but nothing seems to happen. No errors either. Just nothing.

Thanks

Dynamo Core 2.17.0.3472
Dynamo Revit 2.17.0.7404

@Peter-Christensen ,

i am not sure this is the way…

you will need SetName

KR

Andreas