[RESOLVED] What is wrong with this code?

[vert]

strinput = InputBox("Who are you?")
 
    For i = 0 To 2
        If guest(i) = strinput Then
                blnvalid = True
                Else: blnvalid = False
          End If
     Do While blnvalid = False
     strinput = ("reenter")
     Loop
    Next i

I'm trying to validate an input and if validation = false, a new question will be asked instead of the thing looping the same question.