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Why am I getting an error of nil when I click the GUI button to switch?

Asked by

bt6k 23

4 years ago

So here is my script,

01local GUI = script.Parent
02local Button = GUI:WaitForChild("Open/Close")
03local TButton = Button.Frame.Frame["N/A"]
04 
05local State = "Closed"
06local DB = false
07Button.MouseButton1Down:Connect(function()
08    if DB == false then
09        DB = true
10        spawn(function()
11            if State == "Closed" then
12                State = "Opened"
13                Button.Frame.Frame:TweenPosition(UDim2.new(0,0,0,0),Enum.EasingDirection.InOut,Enum.EasingStyle.Quint,1,true)
14            elseif State == "Opened" then
15                State = "Closed"
16                Button.Frame.Frame:TweenPosition(UDim2.new(0,0,-1,0),Enum.EasingDirection.InOut,Enum.EasingStyle.Quint,1,true)
17            end
18        end)
19        wait(.6)
20        DB = false
21    end
22end)
23 
24local Teams = {
25    [1]={
26        Label="Class-D"
27    },
28    [2]={
29        Label="Foundation Personnel"
30    },
31    [3]={
32        Label="Security Department"
33    },
34    [4]={
35        Label="Mobile Task Forces"
36    },
37    [5]={
38        Label="Department of External Affairs"
39    },
40    [6]={
41        Label="Engineering and Technical"
42    },
43    [7]={
44        Label="Ethics Committee"
45    },
46    [8]={
47        Label="Intelligence Agency"
48    },
49    [9]={
50        Label="Internal Security Department"
51    },
52    [10]={
53        Label="Medical Department"
54    },
55    [11]={
56        Label="Rapid Response Team"
57    },
58    [12]={
59        Label="Scientific Department"
60    },
61}
62 
63 
64local tindex = Teams[0]
65for _,B in pairs(Button.Frame.Frame:GetChildren()) do
66    if B:IsA("TextButton") then
67        B.MouseButton1Down:Connect(function()
68            if B.Name == "Up" then
69                TButton.Name = tindex + 1 .. ".Label"
70                TButton.Text = tindex + 1 .. ".Label"
71            elseif B.Name == "Down" then
72                TButton.Name = tindex - 1 .. ".Label"
73                TButton.Text = tindex + 1 .. ".Label"
74            else
75                game.ReplicatedStorage.updateTeam:FireServer(B.Name)
76            end
77        end)
78    end
79end
 View all 79 lines...

It is a team script that should change your teams with the GUI but it does not..

And I am getting the error of:

Players.bt6k.PlayerGui.TeamGUI.LocalScript:72: attempt to perform arithmetic (sub) on nil and number

I am quite new to lua, and was wondering what might cause it?

1 answer

Answered by

youtubemasterWOW 2741

4 years ago

Hello.

Explaining the Error:

The error: "attempt to perform arithmetic (sub) on nil and number" means that you are trying to use math on something that doesn't exist (nil) and a number.

Solution:

Things like table[0] or [table[-1] do not exist because a table's index begins at 1. That was exactly what you were doing. I belive you accidentally used "-" instead of "+" so I've fixed that.

Fixed Script:

01local GUI = script.Parent
02local Button = GUI:WaitForChild("Open/Close")
03local TButton = Button.Frame.Frame["N/A"]
04 
05local State = "Closed"
06local DB = false
07Button.MouseButton1Down:Connect(function()
08    if DB == false then
09        DB = true
10        spawn(function()
11            if State == "Closed" then
12                State = "Opened"
13                Button.Frame.Frame:TweenPosition(UDim2.new(0,0,0,0),Enum.EasingDirection.InOut,Enum.EasingStyle.Quint,1,true)
14            elseif State == "Opened" then
15                State = "Closed"
16                Button.Frame.Frame:TweenPosition(UDim2.new(0,0,-1,0),Enum.EasingDirection.InOut,Enum.EasingStyle.Quint,1,true)
17            end
18        end)
19        wait(.6)
20        DB = false
21    end
22end)
23 
24local Teams = {
25    [1]={
26        Label="Class-D"
27    },
28    [2]={
29        Label="Foundation Personnel"
30    },
31    [3]={
32        Label="Security Department"
33    },
34    [4]={
35        Label="Mobile Task Forces"
36    },
37    [5]={
38        Label="Department of External Affairs"
39    },
40    [6]={
41        Label="Engineering and Technical"
42    },
43    [7]={
44        Label="Ethics Committee"
45    },
46    [8]={
47        Label="Intelligence Agency"
48    },
49    [9]={
50        Label="Internal Security Department"
51    },
52    [10]={
53        Label="Medical Department"
54    },
55    [11]={
56        Label="Rapid Response Team"
57    },
58    [12]={
59        Label="Scientific Department"
60    },
61}
62 
63 
64local tindex = Teams[0]
65for _,B in pairs(Button.Frame.Frame:GetChildren()) do
66    if B:IsA("TextButton") then
67        B.MouseButton1Down:Connect(function()
68            if B.Name == "Up" then
69                TButton.Name = tindex + 1 .. ".Label"
70                TButton.Text = tindex + 1 .. ".Label"
71            elseif B.Name == "Down" then
72                TButton.Name = tindex + 1 .. ".Label"
73                TButton.Text = tindex + 1 .. ".Label"
74            else
75                game.ReplicatedStorage.updateTeam:FireServer(B.Name)
76            end
77        end)
78    end
79end
 View all 79 lines...

Please accept my answer if it helps. There's been a bug going around where you can't accept answers for newer users. If that happens, try going onto incognito mode.

Does not seem to be working... bt6k 23 — 4y

Does it still error? youtubemasterWOW 2741 — 4y

Yes. Same exact thing. bt6k 23 — 4y

i do not know what is wrong. youtubemasterWOW 2741 — 4y

Why am I getting an error of nil when I click the GUI button to switch?

1 answer

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