[Patrick]

Maybe something like this?

pawn Код:

#define EXP_ACHIEVMENT (1000)

#define SetPlayerEXP(%0,%1) \
        PlayerInfo[%0][pEXP] = %1, CheckPlayerEXP(%0)

#define GetPlayerEXP(%0) \
        PlayerInfo[%0][pEXP]

CheckPlayerEXP(playerid)
{
    if(PlayerInfo[playerid][pEXP] >= EXP_ACHIEVMENT) //1, 000
    {
        //code here
    }
    if(PlayerInfo[playerid][pEXP] >= EXP_ACHIEVMENT * 2) //2, 000
    {
        //code here
    }
    if(PlayerInfo[playerid][pEXP] >= EXP_ACHIEVMENT * 3) //3, 000
    {
        //code here
    }        
}