Need help with xml file.

[Michcio]

I have problem. Debug outputs: "ERROR: panelszefa\panelszefapd_s.lua:52: attempt to perform arithmetic on a nil value". This is "xmlNodeSetAttribute(v, "ilosc", tostring(tonumber(stann) - 60000))" line.

function zmienstan (ranga,stann) 
    if ranga == "Szef" then 
    local root = xmlLoadFile ("pd.xml") 
    local pdroot = xmlFindChild (root,"stankontapd",0) 
    if (pdroot) then 
        for i,v in ipairs (xmlNodeGetChildren(pdroot)) do 
        xmlNodeSetAttribute(v, "ilosc", tostring(tonumber(stann) - 60000)) 
        end 
    end 
    end 
end 
addEvent("onPDZmienStan",true) 
addEventHandler("onPDZmienStan",getRootElement(),zmienstan) 

[novo]

Post your full code, what data are you sending to "onPDZmienStan"?

[Michcio]

It is triggered on client-side.

function dajwyplatewpd () 
if source == dajwyplatepd then 
if guiGridListGetSelectedItem ( pszefapdgrid ) then 
local kto = guiGridListGetItemText ( pszefapdgrid, guiGridListGetSelectedItem ( pszefapdgrid ), column1 ) 
local ranga = guiGridListGetItemText ( pszefapdgrid, guiGridListGetSelectedItem ( pszefapdgrid ), column3 ) 
triggerServerEvent("onPDDajWyplate",getRootElement(),kto,ranga,getLocalPlayer()) 
triggerServerEvent("onPDZmienStan",getRootElement(),ranga,guiGetText(stankontapd)) 
end 
end 
end 
addEventHandler("onClientGUIClick",getRootElement(),dajwyplatewpd) 

[novo]

  
guiGetText(stankontapd) 
  

Where stankontapd is?

[Michcio]

stankontapd is at the beggining of the code. The problem is not in stankontapd but in :

xmlNodeSetAttribute(v, "ilosc", tostring(tonumber(stann) - 60000)) 

[Scooby]

just add some checks in it to make sure that the gui ur getting the text from contains a number.