Newbie pie chart report problem

Hi, I've just started using Pie Charts and I'm stuck on a value problem (I think!). My category will be "Connection Status", and the values can be: success:human; success:machine; Connected; Null.

What I want to do is merge the "success:human" and "connected" values into one slice of pie. Is this possible?

Thanks, Dan

Sorry, I was confused, just needed to change the SQL to include both values.