[ApolloScripter]

Hello binnyl, I don't know how exactly SetPlayerMarkerForPlayer works, but I have a similar system, but I used SetPlayerMapIcon to put an icon for all players of the same clan.

The difference is that SetPlayerMapIcon makes it possible to change the constant style to appear on every radar, or just in your field of view.

The problem is that for each Map Icon will need to get the position of the player, but if you are interested follow the steps below and put them in your code, which maybe will work perfectly.

pawn Code:

new iconMapPlayerCount[MAX_PLAYERS]; //Set the variable to Map Icon Count

forward TeamRadar(playerid); public TeamRadar(playerid)
{
    if(IsACop(playerid))
    {
        foreach(new i : Player)
        {
            if(IsACop(i))
            {
                if(IsPlayerConnected(i))
                {
                    new Float:tg_x, tg_y, tg_z; //Set variables to target coordinates
                    GetPlayerPos(i, Float:tg_x, Float:tg_y, Float:tg_z); //Get target pos
                    SetPlayerMapIcon(playerid, iconMapPlayerCount[playerid], Float:tg_x, Float:tg_y, Float:tg_z, 0, 0x59f060FF, MAPICON_GLOBAL); //Add a icon to the target position
                    iconMapPlayerCount[playerid]++; //Increment the player count icon id
                }
                else
                {
                    RemovePlayerMapIcon(playerid, iconMapPlayerCount[playerid]); //Remove the icon if the target disconnect
                }
            }
        }

        iconMapPlayerCount[playerid] = 0; //Set the count to 0
    }
}

I didn't have time to test the operation, but if you use it and some error occurs, just call me.
EDIT NOTE: The problem with this Icon is that only 100 can be used.