How to update or refresh a local variable?

I made a script that moves a block to the player torso's X position. It moves to the position, but only to the original one (where the player spawned). I looked it up and came up with results of update on change and all, but once I put one of my local variables in it, the other local variable (which uses the first variable) underlined blue. Am I doing it wrong? Is there an easier solution? Here is my script

repeat
wait(2.5)
local victim = workspace:FindFirstChild("Player")
local location = victim.Torso.Position
print(location.X)
wait(0.0001)
    repeat
        wait(0.000001)
        repeat
            wait(0.000001)
            if script.Parent.Position.X ~= location.X then
                if location.X > script.Parent.Position.X then
                    print("bigger")
                    script.Parent.Position = script.Parent.Position + Vector3.new(1,0,0)
                elseif location.X < script.Parent.Position.X then
                    print("smaller")
                    script.Parent.Position = script.Parent.Position - Vector3.new(1,0,0)
                elseif location.X == script.Parent.Position.X then
                    print("found")
                end
            end
        until script.Parent.Position.X == location.X
    until 9 + 10 == 21 -- this is necessary for the fact that it will change once i get the variable situation sorted out
until 9 + 10 == 21 --refer to the above comment

Please help!!! Thank you!!!