two code starting private sub workbook open in a same workbook

in my excel sheet, I have used the below code for two different macro function. But my both the code carrying private sub workbook open so its not working. any one can help me, please.

Private Sub Workbook_Open()

inp:
initials = InputBox("Enter Your Name")
If initials = vbNullString Then GoTo inp

Sheets("MAIN INPUT").Cells(3, 53).Value = initials


End Sub
Private Sub Workbook_Open()

Dim iLoop As Integer

'hide all sheets except first one.
For iLoop = 2 To Worksheets.Count
    Worksheets(iLoop).Visible = False
Next

End Sub