Help with basic dispel script?

[Nomfeld]

Anyone know how to fix this code? It's supposed to dispel everything except certain buffs like lifebloom. The dispel portion works but I can't get it to stop dispelling on LB.

local lb = UnitBuff("target", 33763) -- Lifebloom

if lb then
return false
end

for i = 1, 40 do
	local buff = { UnitBuff("target", i) }
	if buff[9] then
		return true
	end
end

TY!

[G0tha]

local lb = UnitBuff("target","Lifebloom") -- Lifebloom

http://www.wowwiki.com/API_UnitBuff