The thing I'm trying to accomplish is to make my own custom bar labeling and to do so I'd like to read the mark number of a reinforcement bar that my script created to later label it accordingly (so my custom labeling would match the mark numbers in the bar legend that can be generated by Allplan).

To visualize the random bar labeling problem I generated the reinforcement 4 times using the same script and the same input parameters. The results are in the "random mark numbers" file attached to this reply. I've also attached the code snippet (the "code snippet" file) that shows the part of my code that, at least from my understanding, generates the labeling. The bar I'm trying to label using my code is one of the visible vertical bars but clearly Allplan choses a different one every time, and not even a different bar of the same mark number, as there are couple of them nearby, but totally different bar of a different shape.

Also I'd like to clarify that those two problems aren't connected. I started experimenting with the built-it bar labeling method to perhaps be able to read the mark number from the built-in labeling to use it afterwards when creating my own labeling system.