Why is this arm script not working?

Help and Feedback Scripting Support
#1

i want the arm to move towards the mouse position

the issue is that nothing really happens it wont move even tho it prints “Moved”

I have tried looking for solutions on the devforum but none helped. Also when i tried printing out the position it was crazy values like 9545, 5765 -7234. Even tho the real position is something like 20, 25, 50

Here is the script:

  armOffset = char.UpperTorso.CFrame:Inverse() * char.RightUpperArm.CFrame
    
    armWeld = Instance.new("Weld")
    armWeld.Part0 = char.UpperTorso
    armWeld.Part1 = char.RightUpperArm
    armWeld.Parent = char

    RunService.Heartbeat:Connect(function()
        if stop == false then
            if armWeld == nil then
                armWeld = Instance.new("Weld")
                armWeld.Part0 = char.UpperTorso
                armWeld.Part1 = char.RightUpperArm
                armWeld.Parent = char
            end
            local cframe = CFrame.new(char.UpperTorso.Position, Vector3.new(Posm.X,Posm.Y,char.RightUpperArm.Position.Z)) * CFrame.Angles(math.pi/2, 0, 0)
            armWeld.C0 = armOffset * char.UpperTorso.CFrame:toObjectSpace(cframe)
            print("Moved")
        else
            if armWeld then
                armWeld:Destroy()
            end
        end
    end)

The script is a regular script and the positions come from a localscript.

#2

Can I see how you’re communicating this information from a localscript to the server script?

#3

Sending info:

i = 0
mouse.Move:Connect(function()
if stop == true then
i = i +1
end
if stop == false then
i = 0
end
if i < 3 then
game.ReplicatedStorage.RemoteEvents.MoveArm:FireServer(mouse.Hit.Position, stop)
end
end)

Recieving info:

game.ReplicatedStorage.RemoteEvents.MoveArm.OnServerEvent:Connect(function(plr, Pos, Stop)
Posm = Pos
stop = Stop
end)