Change RtFunctions parameters in VBA

Hello!
I want to get rid of the "Linked variable not found:" messages without erasing the functions.
It is not possible to change the ParamString because it's "Read only" so i tried to set the type to a beep sound, which seemed to work, but there was no change in the Editor.

Dim iX As Integer
For iX = 0 To thisProject.RtFunctions.Count - 1
If thisProject.RtFunctions.Item(iX).ParamString = "xxx" And thisProject.RtFunctions.Item(iX).Type = "13" Then
    'thisProject.RtFunctions.Item(iX).ParamString = "Internal.Dummy.....off->"
    thisProject.RtFunctions.Item(iX).Type = "74"
End If
Next iX
End Sub

My VB knowledge is not very good, sorry for that.
Thank you!

This is a migrated post! Originally posted on 17.02.2010 by user kicker. Please be aware that information can be outdated.