Increase range of Bravery Cape?

[HisaoShou 3]

Hello everyone. I would like to know if I could increase the range of Bravery Capes.

More precisely, is there any way I can increase the range of pc.aggregate_monster quest function? 

[VegaS™ 10268]

• Src/Server/game/src/char_battle.cpp

  struct FuncAggregateMonster
  {
  	[.....]
  	if (number(1, 100) <= 50) // 50% chance for pulling
  		if (DISTANCE_APPROX(ch->GetX() - m_ch->GetX(), ch->GetY() - m_ch->GetY()) < 5000) // approximate distance 5000
  			if (ch->CanBeginFight())
  				ch->BeginFight(m_ch);
  	[.....]
  };

[WeedHex 635]

I don't suggest to do it XD