[Solved] Mid() Problem

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For some unknown reason I can't get the Mid() function working properly. I'm just trying to read each character, one by one, from a textbox but it's not working. Here's what I have:

For i = 0 To (Len(Text1.Text) - 1)
    MsgBox (Mid$(Text1.Text, i, 1))
Next i

I get the error "Invalid Procedure Call or Argument" when I try to run it. Any ideas?