Selecting non-numerical item from a list

I’m using meerkat to get zoning data and getting a data set with non-numerical items. I want to cull out all of the ‘R’ values from the set while maintaining the tree. See the attached screen shot. List Item can only select for integers and List Index is not finding the ‘R’. I have tried Human Item Selector but I think the list is too long and it crashes grasshopper.

Is there another way to cull out all the ‘R’ Items in the list?



Have a try Match Text.

thanks for the help! That worked. I think Member Index might also work.