What do I do wrong?

After the update to dynamo 1.3.1 i am trying to figure out how to do certain things because some node i used aren’t there anymore.
Most of them i foud a solution but with one of them i am stil strugling.

I do not know what i am doing wrong, as you can see the create Overrdie Graphic settings keeps giving me null as output.

is there somebody that can help me?