@m_magalhaes Thank you very much for your reply. Target was to let user run my plugin in pyton script without open its gui, but set options by some command. Meanwhile I came to solution by implementing ExecuteOptionID method. In this way user first sets options in gui and after can CallCommand anywhere he wants in scripts. Again thank you for your time.

Hi @kosmos3d, without further questions or feedback, we will consider this thread as solved by Monday and flag it accordingly. Cheers, Ferdinand

hi, no problem. By the way, the first register. The second show the collide message so it can't register. But that doesn't unload the first one. That's why your plugin was still working. Cheers, Manuel

Thanks @kosmos3d for the contribution and making the whole community aware of it. Best, R