[Stefcaaaa]

PHP Code:

public OnPlayerDeath(playerid, killerid, reason) 
{ 
    SetPlayerArmour(playerid, 0); 
    if(killerid != INVALID_PLAYER_ID) 
    { 
        new level; 
        SendDeathMessage(killerid, playerid, reason); 
        PlayerInfo[killerid][pKills] ++; 
        PlayerInfo[playerid][pDeaths] ++; 
        trenutnokills[killerid] ++; 
        trenutnodeaths[playerid] ++; 
        level = GetPlayerScore(playerid)++; // You must use GetPlayerScore not SetPlayerScore!
        PlayerInfo[killerid][pLevel] = level;
        SetPlayerScore(playerid,PlayerInfo[playerid][pLevel]);  
     } 


This is what you need!