IsInMyPartyOrRaid always returns 0.

[haku43]

Always returns 0, except (a2 == this).
I tried different return types (byte, int, bool, char ).

[UnmanagedFunctionPointer(CallingConvention.ThisCall)]
        public delegate int IsInMyPartyOrRaidDelegate(uint u1, uint u2);
        public static IsInMyPartyOrRaidDelegate IsInMyPartyOrRaid;

char __thiscall CGUnit_C__IsInMyPartyOrRaid(int this, int a2)
{
  char result; // al@2
  int v3; // eax@5
  int v4; // edi@5
  int v5; // esi@5
  int v6; // eax@8
  int v7; // esi@10
  int v8; // [sp+4h] [bp-8h]@8
  int v9; // [sp+8h] [bp-4h]@8

  if ( a2 == this )
  {
    result = 1;
  }
  else
  {
    if ( (*(_DWORD *)(*(_DWORD *)(this + 208) + 212) >> 3) & 1 && (*(_DWORD *)(*(_DWORD *)(a2 + 208) + 212) >> 3) & 1 )
    {
      v5 = CGUnit_C__GetControllingPlayer(this);
      v3 = CGUnit_C__GetControllingPlayer(a2);
      v4 = v3;
      result = v5
            && v3
            && ((unsigned __int8)CGObject_C__IsLocalPlayer(v5)
             && (v6 = *(_DWORD *)(v4 + 8), v8 = *(_DWORD *)v6, v9 = *(_DWORD *)(v6 + 4), sub_5129F0(&v8))
             || (unsigned __int8)CGObject_C__IsLocalPlayer(v4)
             && (v7 = *(_DWORD *)(v5 + 8), v8 = *(_DWORD *)v7, v9 = *(_DWORD *)(v7 + 4), sub_5129F0(&v8)));
    }
    else
    {
      result = 0;
    }
  }
  return result;
}

However CanAttack works fine.
char __thiscall CGUnit_C__CanAttack(int this, int a2)

[Apoc]

[UnmanagedFunctionPointer(CallingConvention.ThisCall)]
public delegate byte IsInPartyOrRaidDelegate(IntPtr @this, IntPtr otherObject);

2nd arg is a pointer to an object.