Humanoid doesn't follow part?

I'm trying to make a part that will follow the mouse, this part works, however an NPC is meant to follow the part that follows the mouse. The only problem is that it goes to the original position of the part, instead of following it. (By the way theres a keybind that activates the movement, and it moves the part into the workspace so it's not longer in the replicated storage) Here's the script:

local GoHere = game.ReplicatedStorage.GoHere

while wait() do
	script.Parent.Humanoid:MoveTo(GoHere.Position)
end

You haven't given much surrounding context so I'm going to assume that you have cloned the part from ReplicatedStorage into Workspace and modifying its position from there.

If that's the case, the reason the humanoid is only moving to the original position of the part is because the target part in ReplicatedStorage and Workspace are different. Use the position property of the part in Workspace instead.

local GoHere = workspace.GoHere

while true do
	wait()
	script.Parent.Humanoid:MoveTo(GoHere.Position)
end