Illspirit, thanks for your reply.

It do not work that way. Now I've noticed one thing. The text that I want to "input" can not be a property because the user can put there everything he wants. So, I can not say txtInput.Text.
Therefore, must be a variable.
The problem is that I can not find where is it declared.

By the way: what's the difference between txtInput.Text = Form2.Text1.Text and Form2.Text1.Text = txtInput.Text?

Can you explain me plain and simple?