[GunnerZ]

Well. In my server I have an array with different coordinates on.

Define this.

gRandomPlayerSpawns[NUMBER OF COORDS][3]

COORD = x,y,z

pawn Code:

new Float:gRandomPlayerSpawns[5][3] = {
{COORD ONE},
{COORD TWO},
{COORD THREE},
{COORD FOUR},
{COORD FIVE}
};

So you can change the name of the array, with round names.

RoundOnePlayerSpawns[number][3]

pawn Code:

public SetPlayerSpawn(playerid)
{
    if(IsPlayerConnected(playerid))
    {
        if(PlayerRound == 1)
        {
            rand = random(sizeof(RoundOnePlayerSpawns));
            SetPlayerPos(playerid, RoundOnePlayerSpawns[rand][0], RoundOnePlayerSpawns[rand][1], RoundOnePlayerSpawns[rand][2]); //Leave these numbers the 
                                                                //same, only change the name eg. "RoundOnePlayerSpawns"
        }
    }
    return 1;
}

You can add extra cases such as if(PlayerRound == 2) and etc.

Good luck.