Powerpoint VisualBasic Script

Sub textBox()
    Dim myTextBox As Shape
    With ActivePresentation.Slides(1)
        Set myTextBox = .Shapes.AddTextbox _
            (Orientation:=msoTextOrientationHorizontal, Left:=100, Top:=50, _
            Width:=400, Height:=100)
        myTextBox.TextFrame.TextRange.Text = "Corrective Lenses"
    End With
End Sub