[RESOLVED] How to edit the text from a RichTextBox with code?

[zahadumy]

I'm a beginner in Java, and I'm trying to write some text in a RichTextBox programatically. I noticed it has a .Text property and if I write there smth in design view it appears on the form, but in code if I try to write something like this:

richTextBox1.Text="aaa";

it won't work. Can anyone help? Thank you.