How can I planarize them in one time?

Sorry, my English is not very good.

What I want to do is planarizing all the sub surfaces like the orange ones.

When there is only one, it works. However, when there are more than one, it doesn't work anymore.

This is the grasshopper definition:

Is there anybody know why? Thank you. I just start to learn kangaroo.

planarize%20many.gh