随机文件写入错误，请指教

Private Type user
 name As String * 8
 psd As String * 6
End Type
Dim s As user

Private Sub Command1_Click()
Dim i As Integer
Open "c:\user.dat" For Random As #1 Len = Len(s)
 For i = 1 To LOF(1) / Len(s)
  Get #1, i, s
  If s.name = Text1.Text And Text2.Text = Text3.Text Then
     s.psd = Text2.Text
     Put #1, i, s
  Else
    MsgBox "请重新输入密码！"
   End If
Next
  chpsd.Hide
  
End Sub
一直写不进去，请高手指教！