ShowPlayerDialog(playerid, 0, 1, "Caption", "Text", "Okay", "");

CMD:admins(playerid, params[])
{
     for(new i; i<MAX_PLAYERS; i++); // loops through all the players
     {
         if(PlayerInfo[i][pAdmin] >= 1)
         {
             new name[24];// creating a variable for the players name
             GetPlayerName(i, name, sizeof(name));// gets the players name and stores it to the variable name
             format(string,sizeof(string), " %s\r\n ", name);
             ShowPlayerDialog(playerid, 0, 1, "Admins Online", string, "Close", "");
         }
     }
     return 1;
}