Comment vba code from another VBA CODE

I would like to comment the lines who contains Msg Box from another code VBA. I'm trying this with the Library VBA EXTENSIBILITY but i doesn't found the solution.

Any help is welcome.

This is my code:

Sub CommentCode()
        Dim VBProj As VBIDE.VBProject
        Dim VBComp As VBIDE.VBComponent
        Dim CodeMod As VBIDE.CodeModule
        Dim LineNum As Long
        Const QUOTE = ' 

        Set VBProj = ActiveWorkbook.VBProject
        Set VBComp = VBProj.VBComponents("ThisWorkbook")
        Set CodeMod = VBComp.CodeModule

        With CodeMod
            LineNum = .CreateEventProc("Open", "Workbook")
            LineNum = LineNum + 1
            .InsertLines LineNum,  QUOTE 
        End With
    End Sub