can't call various extensions like before, I tried various versions from Bas to the latest version but still have trouble installing extensions, are there any other tools that can check the extensions supported by Bas?
The long answer is that BAS has its own internal code generator, which means that everything in the BAS XML was generated by that system.
However, I strongly do not recommend writing code by hand. It will be extremely difficult to update and understand the code later based on what you wrote today.