How to show multiple data in Collintree Listview from Firebase

as in another threed I’d like to merge two or more tags (in this case Firebase) and show them with ColinTreeListView.

is there anyone who has already developed something like this?
Many thanks

A quick answer : I found a problem, you say the same thing twice

yes a little mistake thanks but I think the real problem is at the end when I use “Call ColinTreeListView.Set list” … there I put just one global list instead both global. I need to merge two json TAG.