Add function to secondfocus addon.

[hasnogaems]

There is addon http://wow.curseforge.com/addons/secondfocus/ . Currently it change target in macroes that in his list to current target name or arena № by using /sf_apply command to the target. What i want is to make him change target manually, without using current target. For example /sf_apply arena5 — change macroes targets to arena5. Is it possible? Can anyone help me with that, plz.