What is thee error in this code?

[ajl_ahmed]

Hi
What is the error in this code? can anyone help me to solve the problem in this code?

Regards

[#2]

@ajl_ahmed 

Dim x As String
For r = 12 To 129
    x = "S" & r
    If Range(x).Value = "D" Then
        Range(x).EntireRow.Hidden = False
    End If
Next r