Recursive function to read a tree hierarchical data structure

I have a software that MS Access can connect to, this softwares stores data in a tree like structure, and I would like a VBA code that would read every node in this tree list and pull data from Access if a condition is met.
For reference, I can provide a script in Pascal that I use inside this software to read the tree list. I have tried to translate the script to VBA, but it always gets stuck at some point in the tree list.