chart with legend area displaying empty entries

[Joe]

I have a chart that is very near what I need. But the legend area on the right is displaying empty entries. How can I get rid of them? I have a filter setup at the chart level already. I have attached an image.

[Hadib Ahmabi]

It depends on what you do to get those empty records. How do you build the chart - code or design? Do you define series?