[RESOLVED] Cannot use "Byval" string to connect with strings

[shynet]

Hello everyone!
I'm working on a class that creates a communication between multiple
computers. When a client connects he has an ID which is a string.
Now I need to show the user ID in a text box and write "SomeUser Connected!" (Replace SomeUser with the ID), this is the sub:

    Public Sub onConnection(ByVal ID As String) Handles Host.onConnection
        TextBox1.AppendText(ID & " connected" & vbNewLine)
    End Sub

Now the problem is that my textbox only shows "SomeUser" and doesn't continue the string as it should display: "SomeUser connected".

Any ideas how it happens? it seems that everything is fine!

Thank you very much!