Tag assemblies

Hello all,
I managed to create a script that add tags to all selected assemblies based on Naming Category parameter. I’m arrived at a point where it give me the following warning when i add two GetParameterValueByName node to help the user identified witch assemblies to select.
Warning
Also, there is a way to rename the list to something more helpful than using FirstItemTitle option? By using this option the first element that is used to name the list it will not be tagged.
TreeView Imput
Below you can find the script.

You are not inputting any elements into your datashapes form, you are just inputting strings. Like the error tells you.

Where this happened?

Here are your elements:

If you want to use them in your final node you have to get them there somehow.
Run the graph and open all node results to see whats going on.

I manage to fix it by doing it like this :


Now what I need to find is how to rename the list that TreeView Input is creating