zmena portu v Delphi

[Fanda Kopriva]

Dobry den
mam problem s vyse uvedenym
   IdUDPClient1
   IdUDPServer1

Kdyz nastavim port ve FormActivate a potom spustim componenty

    IdUDPServer1.DefaultPort:= strtoint(edit7.text);
    idudpclient1.Host:=edit6.text;
    idudpclient1.Port:=strtoint(edit7.text);
     idUDPServer1.Active:=true;
     idUDPClient1.Active:=true;

  tak to funguje .
  ale kdyz to zkusim za chodu tak ne.

    idUDPServer1.Active:=false;
     idUDPClient1.Active:=false;
    IdUDPServer1.DefaultPort:= strtoint(edit7.text);
    idudpclient1.Host:=edit6.text;
    idudpclient1.Port:=strtoint(edit7.text);
     idUDPServer1.Active:=true;
     idUDPClient1.Active:=true;

muzete prosim poradit
diky fanda