Why isn't this rotating my model when remote-function is fired?

Why isn't this rotating my model?

There are no errors.

Please note: I have set the 'uis' and other shortened stuff to the corresponding things earlier in the script.

Here is the part of the very long local script that fires a remote functions when the R key is pressed:

uis.InputBegan:connect(function(inst)
    if Rotating == false then
        if placing == true then
         if inst.KeyCode == Enum.KeyCode.R then
            local RotateEvent = game.Workspace.RemoteFunctions:FindFirstChild("RotateEventFor"..player.Name)
            RotateEvent:InvokeServer(id)
            Rotating = true
         end
        Rotating = false
        end
    end
end)

Here is the part of the very long server side script that should start whenever the remote function is fired:

function event3.OnServerInvoke(id)

    local PartToRotate = game.Workspace:FindFirstChild("id",true).Value == id

    for i,v in pairs(game.Workspace:GetChildren()) do

        if v.Name == "ModelToPlaceFor"..plr.Name then

            if v:FindFirstChild("id").Value == id then

                PartToRotate = v.Parent

                PartToRotate:SetPrimaryPartCFrame(CFrame.new(PartToRotate.PrimaryPart.CFrame)*CFrame.Angles(0,0,math.rad(90 + PartToRotate.PrimaryPart.CFrame.Z)))

            end

        end

    end

end

As I previously stated;

There are 0 errors when I press the 'R' key in game, and I know that it connects correctly because I debugged it when the output said various stuff that I needed to fix.

Any help is greatly appreciated!