[=WoR=Varth]

Simple code:

pawn Code:

new Spectate[MAX_PLAYERS];

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(newkeys & KEY_RIGHT)
    {
        for(new i=Spectate[playerid];i<MAX_PLAYERS;i++)
        {
            if(IsPlayerConnected(i)
            {
                if(PlayerData[i][specialybe] != 0)
                {
                    PlayerSpectatePlayer(playerid,i);
                    Spectate[playerid] = i;
                    return 1;
                }
            }
        }
    }
    return 1;
}