Can I customize simpleUML in Android Studio 3.6.2?

I don't really know why the problem, it seems to be ok, but i was searching a little bit and i found that Visual Paradigm plugin, it seems works better, would be good prove other ones. But before install the plugin, you need install Visual Paradigm. So i hope this helps a little bit, good luck. Visit: https://www.visual-paradigm.com/support/documents/vpuserguide/2381/2385/66578_creatingauml.html