Great, thanks for that. It works now, although not by adding a 4th test but by adding a fifth! Strange one!
Wow... and I'm able to reply to threads. You're getting good :-)
Two more questions:
1) Is it possible to draw on the graph? For example lines for targets?? This would be real cool and very helpful.
2) Is it posible to add a test that is not in the list so that it can be selected from the test list in future, rather than having to type it out every time I add the test?
Thank you.