Copper/red hair to brown, Goldwell color

[jxb]

Client dyed hair and it's currently copper/red level 7; she wants to go back to a light brown, neutral. Using goldwell line on her; not sure if the 7sb will be enough since it's blue in the green direction or if i should use add 7mb with the 7sb. Thoughts?

 

[AcidPerm]

You need to remove the copper first.