[cuzido]

Sorry I missed the returns on your loop.
Always follow what Konstantinos said.

PHP код:

dcmd_gzinvisible(playerid,params[])
{
   #pragma unused params
   if(CanUseGangZ[playerid] == 0)
   {
     SendClientMessage(playerid,COLOR_ERROR,"[ERROR] You must be a Gang-Z Member to use this command.");
     return 1;
   }
   for(new i; i != MAX_PLAYERS; i++){
      if (IsPlayerConnected(i)) {
      SetPlayerMarkerForPlayer(i, playerid, 0xFFFFFF00);
      }
   }
   SendClientMessage(playerid,COLOR_PURPLE,"[Gang-Z] You are now invisible on the radar.");
   return 1;
}
dcmd_gzvisible(playerid,params[])
{
   #pragma unused params
   if(CanUseGangZ[playerid] == 0)
   {
     SendClientMessage(playerid,COLOR_ERROR,"[ERROR] You must be a Gang-Z Member to use this command.");
     return 1;
   }
   for(new i; i != MAX_PLAYERS; i++){
      if (IsPlayerConnected(i)){
      SetPlayerMarkerForPlayer(i,playerid,0xFFFFFFAA);
      }
   }
   SendClientMessage(playerid,COLOR_PURPLE,"[Gang-Z] You are now visible on the radar.");
   return 1;
}