[Tom1412]

error 017: undefined symbol "GetPointDistanceToPointExMorph"


what to do?
this is the section the error comes up in

PHP код:

public NameTimer()
{
    for(new i = 0;i < MAX_PLAYERS;i++)
     {
         if(IsPlayerConnected(i))
         {
             for(new q = 0;q < MAX_PLAYERS;q++)
             {
                if(IsPlayerConnected(q))
                {
                     new Float:p1x;
                    new Float:p1y;
                    new Float:p1z;
                    new Float:p2x;
                    new Float:p2y;
                    new Float:p2z;
                    if(IsPlayerConnected(i) && IsPlayerConnected(q))
                    {
                        GetPlayerPos(i,p1x,p1y,p1z);
                        GetPlayerPos(q,p2x,p2y,p2z);
                        if(GetPointDistanceToPointExMorph(p1x,p1y,p1z,p2x,p2y,p2z) < pdistance)
                        {
                            if(PlayerInfo[q][pMaskuse] != 1)
                            {
                                ShowPlayerNameTagForPlayer(i,q,1);
                            }
                        }
                        else
                        {
                            ShowPlayerNameTagForPlayer(i,q,0);
                        }
                    }
                }
            }
        }
    }
}