Hi, Michael.

Thank you very much for your answer, I have successfully solved this problem. But I also want to add ICONS to the command bar to DIY my moi 3d, which I think is very cool and practical. I'm going to add 2 ICONS here for import and export, as shown. I only know that I need to edit the SidePane.htm file, but I don't understand programming. I have tried several times and failed. Please help me, thank you very much.