How to make a humanoid look at its target using BodyGyro?

torso = script.Parent.Torso
minrange = 20
target = nil
tor = nil
head = script.Parent.Head

function findNearestTarget()
	plrs = game.Players:GetChildren()
	for i, plr in ipairs(plrs) do
		if plr.Character ~= nil then
			if plr.Character:findFirstChild("Humanoid") and plr.Character.Humanoid.Health>0 then
				if plr.Character:findFirstChild("Torso") then
					tor = plr.Character.Torso
				end	
				if target == nil then
					if ((torso.Position - tor.Position).magnitude <= minrange)  then
						target = plr.Character
					else
						target = nil
					end	
				end
			end
		end
	end
end

while true do
	wait(0.1)
	findNearestTarget()
	if target ~= nil then
		if ((torso.Position - tor.Position).magnitude <= minrange) then
			script.Parent.Torso.BodyGyro = CFrame.Angles()--Piece of the cords needed!
		else
			target = nil
		end
	else
		target =nil
	end	
end

This is the script that will find nearest target. If the target is less then 20 studs away of the target, he's supposed to start looking at it. I don't understand the body gyro, i already puted alot f values between the paranthesis and the mob just starts spazing out. Please help me? Note: This is a flying creature.