Why isn't the property of my part changing after I called the function? [Solved]

I successfully got the function to work, but the position of the part will not change after waiting 3 seconds. Can you help me?

01	function myPart(myPosition)
02	    local part = Instance.new("Part")
03	    part.Anchored = true
04	    part.BrickColor = BrickColor.new("Black")
05	    part.Position = myPosition
06	    part.Parent = workspace
07	 
08	    return myPart
09	end
10	 
11	local myPartData = myPart(Vector3.new(2,7,1))
12	wait(3)
13	myPartData.Position = Vector3.new(2,7,2)

You're indexing the function, not the part itself. Change line 8 to "return part".