Melee Combo Attack Issue

[Imperfect]

I finished a melee combo system base on UDK Melee Weapon Tutorial by Mavrik Games : here
But I have a problem with combo.
I cant go to second or third attack from first or second attack easily.
I click the mouse left click quickly, the player just sometime go to second or third attack.
How I can fix this problem?

Weapon Class:

function RestoreAmmo(int Amount, optional byte FireModeNum)
{
	Swings[FireModeNum] = Min(Amount, MaxSwings);
}

function ConsumeAmmo(byte FireModeNum)
{
	if (HasAmmo(FireModeNum))
	{
		Swings[FireModeNum]--;
	}
}

simulated function bool HasAmmo(byte FireModeNum, optional int Ammount)
{
	return Swings[FireModeNum] > Ammount;
}

simulated function FireAmmunition()
{
	StopFire(CurrentFireMode);
	SwingHitActors.Remove(0, SwingHitActors.Length);

	if (HasAmmo(CurrentFireMode))
	{
		if (MaxSwings - Swings[0] == 0 && CrystalTerraWeaponPawn(Owner).bCanAttack) {
			CrystalTerraWeaponPawn(Owner).SwingAnim.PlayCustomAnim('b_attack1', 1.0);
			CrystalTerraWeaponPlayerController(Instigator.Controller).IgnoreMoveInput(true);
			CrystalTerraWeaponPlayerController(Instigator.Controller).IgnoreLookInput(true);
			SetTimer(GetFireInterval(CurrentFireMode), false, nameof(Testing));
		} else if(MaxSwings -Swings[0] == 1 && CrystalTerraWeaponPawn(Owner).bCanAttack) {
			CrystalTerraWeaponPawn(Owner).SwingAnim.PlayCustomAnim('b_attack2', 1.0);
			CrystalTerraWeaponPlayerController(Instigator.Controller).IgnoreMoveInput(true);
			SetTimer(GetFireInterval(CurrentFireMode), false, nameof(Testing));
		} else if(MaxSwings -Swings[0] == 2 && CrystalTerraWeaponPawn(Owner).bCanAttack) {
			CrystalTerraWeaponPawn(Owner).SwingAnim.PlayCustomAnim('b_attack3', 1.0);
			CrystalTerraWeaponPlayerController(Instigator.Controller).IgnoreMoveInput(true);
			bIsLastHit = true;
			SetTimer(1.25f, false, nameof(Testing));
		} else {
			Testing();
		}
		PlayWeaponAnimation(SwordAnimationName, GetFireInterval(CurrentFireMode));
		super.FireAmmunition();
	}
}

simulated state Swinging extends WeaponFiring
{
	simulated event Tick(float DeltaTime)
	{
		super.Tick(DeltaTime);
		TraceSwing();
	}

	simulated event EndState(Name NextStateName)
	{
		super.EndState(NextStateName);
		SetTimer(GetFireInterval(CurrentFireMode), false, nameof(ResetSwings));
	}
}

function ResetSwings()
{
	RestoreAmmo(MaxSwings);
	CrystalTerraWeaponPlayerController(Instigator.Controller).IgnoreMoveInput(false);
}

function Testing()
{
	CrystalTerraWeaponPlayerController(Instigator.Controller).IgnoreMoveInput(false);
	CrystalTerraWeaponPlayerController(Instigator.Controller).IgnoreLookInput(false);
	bIsLastHit = false;
}

Thank You.

[Blade[UG]]

It looks to me like you should be using Swings[CurrentFireMode] rather than Swings[0] frequently. Also, would try logging MaxSwings, Swings[0] or Swings[CurrentFireMode] and the bCanAttack to make sure that your variables are what you are expecting them to be.

As an aside, you can also use SwingHitActors.Length = 0 to empty an array.