The Code below works just fine when the Worksheet is
unprotected.
The problem starts when I protect the worksheet. All
cells in the code are unprotected.
I get an error 1004.

Please Help

Sub Worksheet_SelectionChange(ByVal target As Range)
If Range("C23") < 8 Then
Range("C8:C22").Interior.ColorIndex = 6
Else
Range("C8:C22").Interior.ColorIndex = 44
End If
End Sub