Attempt to concatenate global.

[Guest]

Hello !

I have problem with my system packages (again). Error:

Attempt to concatenate global 'id2' (a boolean value).

Edited November 8, 2014 by Guest

[Kenix]

Variable id2 is boolean, not number, because setElementData function return boolean. Read arguments on wiki before post something!

Use

getElementData 

function if you want get data.

Also If you want boolean value convert to string use

tostring 

function.

Edited September 10, 2012 by Guest

[TAPL]

and please next time use lua button not Code.

EDIT:

is your code client-side or server-side?

if it client side

outputChatBox in client-side does not need player argument.

btw: player argument here does not look defined.

outputChatBox("Załadowałeś trociny!", player) 

if it server-side

outputChatBox in server-side need player argument.

outputChatBox("Id: " .. id .. "Id 2: " .. id2, 0, 255, 0) 

[Guest]

If i use "getElementData": (this is client script)

  
function towarTrociny() 
    dest = markers[math.random(1, #markers)] 
    if towar == 0 then 
        towar = 1 
        outputChatBox("Załadowałeś trociny!", player) 
        destblip = createBlip( dest[1], dest[2], dest[3], 41, 2, 255, 255, 0, 0, 100) 
        setElementData(source, "id2", dest[4]) 
        id2 = getElementData(source, "id2") 
        outputChatBox("Id: " .. id .. "Id 2: " .. id2, 0, 255, 0) 
    else 
        outputChatBox("Aby załadować ten towar musisz mieć minimum 0 punktów!", 0, 255, 0) 
    end 
end 
  

Error:

Attempt to concatenate global 'id2' (a nil value).

Sorry...

[TAPL]

I can't see where is id define.

Since it client-side, Mostly you should use localPlayer Instead of source. Otherwise, post full code, includes the event you're using and the Table (markers).

[Guest]

  
-- Współrzędne: x, y, z   
local markers = { 
                { -1725, -121, 2 }, 
                {-1854, 1402, 6.1}, 
                {-2282, 2278, 4,5}, 
                {-367, 1547, 75,1}, 
                {345, 2534, 16,2}, 
                {1641, 2412, 10}, 
                {-2887, 503, 4}, 
                {-1515, 721, 6}, 
                {-683, 965, 12}, 
                {948, 2279, 11}, 
                {1488, 2146, 10}, 
                {1910, 2157, 10}, 
                {2242, 1977, 9}, 
                {-658, 2318, 138}, 
                {-2054, -2565, 30}, 
                {-1416, -1468, 101}, 
                {-605, -483, 25}, 
                {-55, -326, 5}, 
                {1077, -307, 75}, 
                {-2644, 1334, 7}, 
                {2481, 2796, 10}, 
                {-857, -1944, 15}, 
                {-87, -1574, 2}, 
                {-2264, -1688, 480}, 
                { -2029.1010742188, 172.45364379883, 27.35425567627 } 
                } 
  
source = getLocalPlayer() 
  
local towar = 0 
  
-- Tworzenie markerów i blipów oraz inicjowanie ich 
for k, v in ipairs (markers) do 
    destmarker = createMarker(v[1], v[2], v[3], "cylinder", 3, 255, 255, 0, 255) 
    setElementData(destmarker, "id", v[4]) 
    id = getElementData(destmarker, "id") 
    createBlip(v[1],v[2],v[3], 51) 
end 
  
-- Funkcja rozładunek 
function rozladunek(source) 
    for b, tow in ipairs (pack) do 
        if towar == b and id == id2 then 
            triggerServerEvent("punkty", localPlayer, points) 
            towar = 0 
            rmoney = math.random(tow[4],tow[5]) 
            triggerServerEvent("kasa", localPlayer, rmoney) 
            outputChatBox("Rozładowałeś: " .. tow[2], player) 
            destroyElement(destblip) 
        else 
            outputChatBox("To nie jest ten rozładunek!", 0, 255, 0) 
        end 
    end 
end 
  
-- Funkcje załadunków 
function towarTrociny() 
    dest = markers[math.random(1, #markers)] 
    if towar == 0 then 
        towar = 1 
        outputChatBox("Załadowałeś trociny!", player) 
        destblip = createBlip( dest[1], dest[2], dest[3], 41, 2, 255, 255, 0, 0, 100) 
        setElementData(source, "id2", dest[4]) 
        id2 = getElementData(source, "id2") 
        outputChatBox("Id: " .. id .. "Id 2: " .. id2, player, 0, 255, 0) 
    else 
        outputChatBox("Aby załadować ten towar musisz mieć minimum 0 punktów!", 0, 255, 0) 
    end 
end 
  

[TAPL]

The rows in the table has only 3 values, that means dest[4] and v[4] is nil.

line 39, make no sense, it will overwrite.

and there are others errors.

[Guest]

But "setElementData(destmarker, "id", v[4])" make v[4]. If you can please ready code.

[Castillo]

When is "towarTrociny" function executed?

[Guest]

If you load goods.

[myonlake]

Why are you using globals in the first place.

[Guest]

I don't know. I can't good programing in lua. Please help.

[Kenix]

I don't know. I can't good programing in lua. Please help.

viewtopic.php?f=148&t=40809

[Guest]

Websites do not help me, especially because there is no one solution to any errors.

[Guest]

Client:

  
for k, v in ipairs (markers) do 
    destmarker = createMarker(v[1], v[2], v[3], "cylinder", 3, 255, 255, 0, 255) 
    createBlip(v[1],v[2],v[3], 51) 
    setElementData(destmarker, "id", v[4])  
end 
  
function towarTrociny() 
    dest = markers[math.random(1, #markers)] 
    if towar == 0 then 
        towar = 1 
        outputChatBox("Załadowałeś trociny!", player) 
        destblip = createBlip( dest[1], dest[2], dest[3], 41, 2, 255, 255, 0, 0, 100) 
        setElementData(source, "id2", dest[4]) 
    else 
        outputChatBox("Aby załadować ten towar musisz mieć minimum 0 punktów!", player, 0, 255, 0) 
    end 
end 
  

Server:

  
function rozladunek(source) 
    local x1, y1, z1 = getMarkerTarget(source) 
    local x2, y2, z2 = getMarkerTarget(blipmarker) 
    for b, tow in ipairs (pack) do 
        if towar == b and x1 == x2 and y1 == y2 then 
            setElementData(getLocalPlayer(),"points",tonumber(points + 1)) 
            towar = 0 
            rmoney = math.random(tow[4],tow[5]) 
            givePlayerMoney( source, tonumber(rmoney)) 
            outputChatBox("Rozładowałeś: " .. tow[2], player) 
            destroyElement(destblip) 
        else 
            outputChatBox("To nie jest ten rozładunek!", player, 0, 255, 0) 
        end 
    end 
end 
addEventHandler("rozl", getRootElement(), rozladunek) 
  

Why can i unload the goods in all the markers? Error:

Bad argument @ 'getMarkerTarget'