[Hornet600]

I got a vehicle system with insurances when it destroyes a car it loses a license and if the licenses are 0 the car will be deleted from the database and is working how its suposed.

Now im creating a command to buy insurances but im having problems increasing values

for exemple

new a = 500;

a = (a + 500);

here goes my code

pawn Код:

if(strcmp(x_v,"buyinsurance",true) == 0)
        {
            new carkey = playerinfo[playerid][vkey];
            
            new xquery[256];
            if(IsPlayerInAnyVehicle(playerid))
            {
                if(IsPlayerInVehicle(playerid, carkey))
                {
                    GivePlayerCash(playerid,- vehicleinfo[carkey][Insurances]);
                    vehicleinfo[carkey][Insurances] = (vehicleinfo[carkey][Insurances] +1); // buged
                    vehicleinfo[carkey][InsurancePrice] = (vehicleinfo[carkey][InsurancePrice] +500); // buged
                    printf("insurances= %d InsurancePrice = %d",vehicleinfo[currentveh][Insurances],vehicleinfo[currentveh][InsurancePrice]);
                    format(xquery, sizeof(xquery),"UPDATE vehicles SET Insurances=%d,InsurancePrice=%d WHERE carid=%d",vehicleinfo[currentplayervehicle[playerid]][Insurances],vehicleinfo[currentplayervehicle[playerid]][InsurancePrice],currentplayervehicle[playerid]);
                    mysql_query(xquery);
                    new xstring[120];
                    format(xstring, sizeof(xstring),"%s you bought a new insurance for your vehicle.",playerinfo[playerid][Name]);
                    SendClientMessage(playerid, COLOR_GREEN, xstring);
                }
                else
                {
                    SendClientMessage(playerid, COLOR_GREEN, " You are not inside your vehicle");
                }
            }
            else
            {
                SendClientMessage(playerid, COLOR_RED, " You are not inside a vehicle");
            }

        }

how i can fix it?