Formula
CommonFun.calcBuff_9000
function CommonFun.calcBuff_9000(srcUser, targetUser, a, b, c, d, lv)
if srcUser == nil or targetUser == nil then
return 0
end
local A = 0
local skilllv_1 = srcUser:GetLernedSkillLevel(2950_MERCHANT:DARKNESS_DOMINATOR)
if skilllv_1 == 7 and targetUser:GetNpcID() ~= 0 then
A = a
else
A = b
end
return A
end