Excel new chart sheet index

[RobBroekhuis]

I'm trying to add a new chart sheet, using the statement

Charts.Add after:=Sheets(Sheets.Count)

I want the new chart to appear as the last tab in the sheet tab order. Instead, it comes out second-to-last. Some debugging on the immediate screen yields:

Before execution of the command above:

?sheets.Count
?sheets(sheets.Count).name
info

After execution of the command above:

?activesheet.index
5
?sheets("info&quot.index
6

What's going on?
Rob