I cannot draw with brush

[tigercatx30489956]

Greetings. I have got a problem with my Adobe Animate 19.0. Recently I was just testing it to learn how everything works but the brush tool does not allow me to draw. It erases the last edit. Here is an example.

[tigercatx30489956 · Accepted solution]

Ok. At the end I managed to solve this problem by myself. The brush was simply set on colourize inside mode with no reason. By the way it works as it should. Hope this solution can help someone else. Goodbye!