Unexpected error in my script?

while targetfound == false do
	for i, v in pairs(Workspace:GetChildren()) do
		if v:FindFirstChild("Target") ~= nil then
			target = v -- line 48
			print("target")
			if (script.Parent.Position - target.Position).magnitude < range then
				print("in range")				
				targetfound = true
				print("TargetfoundMG == "..tostring(targetfound))
				repeat
					move(target)
					print("fire")
					fire(target)
					wait(5)
				until
					target == nil or (script.Parent.Position - target.Position).magnitude > range	
					print("target lost")
					targetfound = false	
					print("TargetfoundMG == "..tostring(targetfound))
			end
		end
	end
	wait(.5)
end 

This is a snippet from a target finding system (sorta obvious) in this case it is trying to find a string value named "Target" that has the value "Target" this is the error I get

"23:33:45.046 - Position is not a valid member of StringValue 23:33:45.047 - Script 'Workspace.MG Turret.Rocket.MGFire', Line 48 23:33:45.047 - Stack End"

If you feel trusting enough to open a link, here's the hierarchy of the part: http://prntscr.com/3jmpnw if not then I'll try to explain it Follower (a part) Health (number value) Target (the string value) BodyPosition Script (to make the bodyposition follow my character for testing purposes)

I'm sorry if I haven't thoroughly explained, it's just that I have no clue why this is happening.

(Edited to include the whole target finding script)