Origin Ver. and Service Release (Select Help-->About Origin): OriginPro 2016 (64-bit) Sr2, b9.3.2.303 (Home Use) Operating System: Windows 10 (64-bit) Hello, When I draw this graph, I selected 4 Y's. But why there are two unwanted items ("%(5) & %(6)") in the legend? And how to avoid it? (as I don't want to correct every time I generated a new graph) Thx!