[Gambas-user] Warning: Class name hidden by local declaration: key

[Demosthenes Koptsis]

i wrote a demo code for Action property as follows...

i have a Form with a Menu and a Button for "save" Action

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' Gambas class file

Public Sub Form_Open()
  Me.Center
  Menu1.Action = "save"
  Button1.Action = "save"
End

Public Sub Action_Activate(key As String) As Boolean
  Select Case key
  Case "save"
  ' call save sub at here
   Print "save to a file."
  End Select
End

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i get a warning at line 9, Public Sub Action_Activate(key As String) As 
Boolean

Class name hidden by local declaration: key


What does this mean ?