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Got an error called "Attempt to index nil with 'leaderstats'." How can I fix this?

Asked by
JAEATraveating 0
3 years ago

I am writing a script where if you press a button a certain amount of time, a closed barrier will open.

This is the script I wrote:

game.Players.PlayerAdded:Connect(function(plr)
    local leaderstats = Instance.new("Folder")
    leaderstats.Parent = plr
    leaderstats.Name = "leaderstats"

    local Points = Instance.new("IntValue", leaderstats)
    Points.Name = "Points" -- Code for the leaderstat.
end) 

local clickDetector = game.Workspace.Button.ClickDetector

clickDetector.MouseClick:Connect(function(plr) 
    plr.leaderstats.Points.Value = plr.leaderstats.Points.Value + 1  -- Adds a point every time the player clicks the button.
end) 

if plr.leaderstats.Points.Value >= 30 then
    game.Workspace.Barrier.BrickColor = BrickColor.new("Lime green")
    game.Workspace.Barrier.CanCollide = false
end -- I want this to run if the players' points are greater than or equal to 30, only gave me an error.

I put the code above inside a normal script at ServerScriptService. Whenever I playtest the game this error appears: 16:16:57.032 - ServerScriptService.Leaderstats:16: attempt to index nil with 'leaderstats'. I was expecting that the barrier will open once the player has 30+ points...

The code runs perfectly fine and adds one point every time I click the button... until it reaches line 16. The error told me that there's something wrong with it. I do not know what part of it I did a mistake or if I used a wrong syntax.

I tried doing this and this one, doesn't work or am I missing something?

0
That is because you haven't declared the 'plr' variable outside the MouseClick Event. plr will only work inside the event (not outside) Soban06 410 — 3y
0
Use while true do, If the player doesn't have the amount of points the script won't run. Once it runs that would be the end of it but if you used while true do, as soon as you get 30 points it will open. Also a sidenote for using while true do, do while true do wait(). If you just do while true do then it will crash the game TheBeastMare 3 — 3y

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Answered by
NotTheChara 191
3 years ago

First, the plr argument can only be used in the function, place all the codes inside the PlayerAdded function and it would fix the error. Secondly, the if statement will only be checked once, use :GetPropertyChangedSignal() or .Changed to fire a function and check if the value reaches 30 or higher. The code should be like this.

game.Players.PlayerAdded:Connect(function(plr)
    local leaderstats = Instance.new("Folder")
    leaderstats.Parent = plr
    leaderstats.Name = "leaderstats"

    local Points = Instance.new("IntValue", leaderstats)
    Points.Name = "Points"

    local clickDetector = game.Workspace.Button.ClickDetector

    clickDetector.MouseClick:Connect(function(plr) 
        plr.leaderstats.Points.Value = plr.leaderstats.Points.Value + 1
    end) 

    plr.leaderstats.Points.Value:GetPropertyChangedSignal("Value"):Connect(function()
        if plr.leaderstats.Points.Value >= 30 then
            game.Workspace.Barrier.BrickColor = BrickColor.new("Lime green")
            game.Workspace.Barrier.CanCollide = false
        end
    end)
end)
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