I am trying to write some code to automate the addition, change and deletion
of scenarios with Scenario Manager to avoid having to open the window and do
everything manually. I basically have an input matrix, and then the code is
supposed to either add, change or delete the scenarios. However, I am getting
a run-time error (unable to get the scenario propery of worksheet class) on
the delete section. I am a relative beginner and any help will be greatly
appreciated:

Set m = Range("f5")
Set M_1 = Range("M_1")
Set M_2 = Range("M_2")

If m.Value = "Add" Then
ActiveSheet.Scenarios.Add Name:=Array(M_1.Value),
ChangingCells:=Range("AnnMil"), _
Values:=Array(M_1.Value)
ActiveSheet.Scenarios.Add Name:=Array(M_2.Value),
ChangingCells:=Range("AnnMil"), _
Values:=Array(M_2.Value)

ElseIf m.Value = "Change" Then
ActiveSheet.Scenarios("M_1").ChangeScenario , Values:=Array(M_1.Value)
ActiveSheet.Scenarios("M_2").ChangeScenario , Values:=Array(M_2.Value)

€˜to delete a scenario
Else
ActiveSheet.Scenarios(Array(M_1.Value)).delete
ActiveSheet.Scenarios(Array(M_2.Value)).delete

End If