How to set model rotation?

Heyo, I wan't to set a model rotation, this works kinda works but it adds on to the rotation. So how would I set it and not just add on to the rotation amount?

I'm sorry if I'm not making sense I just don't know how to explain it.... Basically I want the rotation = what I set and not the original rotation+what I set

function rotatemodel(model,center,rotation)
	for i,v in ipairs(model:GetChildren()) do
		if v:IsA("BasePart") then
		v.CFrame=((CFrame.new(center)*rotation)*CFrame.new((v.Position-center)))*(v.CFrame-v.Position)
		--elseif v:IsA("Model")or v:IsA("Folder") then
		--rotatemodel(model,center,rotation)
		end	
	end
end
local tabel = game.Workspace["Red Couch"]
rotatemodel(tabel,tabel.Base.Position,CFrame.Angles(math.rad(-0), math.rad(22.5), math.rad(0)))

`local x, y, z = game.Workspace["Red Couch"].Base.CFrame:toEulerAnglesXYZ() game.Workspace["Red Couch"]:setPrimaryPartCFrame(game.Workspace["Red Couch"].Base.CFrameCFrame.Angles(x-1, y*-1, z*-1)*CFrame.Angles(math.rad(-0), math.rad(22.5), math.rad(0)))

`