So im trying to do a system where you can drag blocks and i used this link as an inspiration: https://www.youtube.com/watch?v=iRi2Mfow8qg

Here is one of the scripts which has the problem in it: so here is the local script: my problem is that it continously says"attempt to call boolean value" in output for this script at lines 24 and 46. I labeeld em, please help me. I can also cantact through discord

local TAG_NAME = 'Pickup'

local player = game.Players.LocalPlayer

local mouse = player:GetMouse()

local collectionService = game:GetService("CollectionService")
local usserInput = game:GetService("UserInputService")

local requestGrab = game.ReplicatedStorage.RequestGrab
local stopGrab = game.ReplicatedStorage.StopGrab

local trackingPart = nil
local heartbeat

function UpdateTrackingPart()
 local ray = mouse.UnitRay
 local position = ray.Origin + (ray.Direction * 20)
 trackingPart.BodyPosition.Position = position
end

function MouseDown()
 local target = mouse.Target
 if (target and requestGrab:InvokeServer(target)) then  -------------------------------PROBLEM HERE
  trackingPart = target
  heartbeat = game:GetService("RunService").Heartbeat:Connect(UpdateTrackingPart)
 end
end

function MouseUp()
 if (not trackingPart) then return end 
 stopGrab:FireServer(trackingPart)
 trackingPart = nil
 heartbeat:Disconnect()
end


function CharacterAdded(character)
 mouse.TargetFilter = character
 
end

usserInput.InputBegan:Connect(function(inputObject, processed)
 if (processed) then return end
 if (inputObject.UserInputType == Enum.UserInputType.MouseButton1) then
  MouseDown()  ------------------------------------------PROBLEM HERE
 end
end)

usserInput.InputEnded:Connect(function(inputObject, processed)
 if (inputObject.UserInputType == Enum.UserInputType.MouseButton1) then
  MouseUp()
 end
end)


CharacterAdded(player.CharacterAdded:Wait())
player.CharacterAdded:Connect(CharacterAdded)

thanks to anyone who tries to help

Anonymous