Is there a way to Repaint inspector on custom marker drawer?

Is there a way to force repaint of inspector after an array? I'm drawing elements of Array through loop.

Code (CSharp):

1. Button clearButton = new Button(() =>
2. {
3.     paramProp.ClearArray();
4.      serializedObject.ApplyModifiedProperties();
5.      Repaint();
6. })
7. { text = "Clear" };

Repaint doesn't happen, but if I select other marker and this one again it work.