Mouth Opened Trigger works only after the second time I open my mouth

Hello,

I am trying to create an effect where fireworks go off when someone opens their mouth. It works, but only if I open and close my mouth twice. The fireworks only go off after the first time I open and close my mouth. Any help would be greatly appreciated.Thank you. The script I am using is below. 

var triggerStartTime = getTime() - script.TriggerDisableTime;

// What happens when event is triggered
function onTriggered()
{
print("FaceTriggerAnim: " + script.AnimationTrigger + " triggered");

// Called when animation ends
function animationCallback()
{
script.AnimationMixer.setWeight(script.LayerName, 0.0);
}

// Play animation layer with sound (if available)
if (script.AnimationMixer && script.LayerName)
{
script.AnimationMixer.startWithCallback(script.LayerName, 0.0, script.animationPlayCount, animationCallback);
script.AnimationMixer.setWeight(script.LayerName, 1.0);
}

for (var i = 0; i < script.play2dSprites.length; i++)
{
if (script.play2dSprites[i]
&& script.play2dSprites[i].mainPass.baseTex
&& script.play2dSprites[i].mainPass.baseTex.control
&& script.play2dSprites[i].mainPass.baseTex.control.play)
{
script.play2dSprites[i].getSceneObject().enabled = true;
script.play2dSprites[i].mainPass.baseTex.control.play(script.texturePlayCount, script.texturePlayOffset);
}
}

for (var i = 0; i < script.playAudios.length; i++)
{
if (script.playAudios[i])
{
var audioComponent = getAudioComponentForTrack(script.playAudios[i]);
audioComponent.play(script.audioPlayCount);
}
}

}

// Trigger an action if not in cooldown period
function triggerCallback()
{
if (getTime() >= triggerStartTime + script.TriggerDisableTime) {
triggerStartTime = getTime();
onTriggered();
}
}

// Setup the audio component if audio track defined
function getAudioComponentForTrack ( audioTrackAsset )
{
var trackName = audioTrackAsset.name;

if (!global.ftAudioComponents)
{
global.ftAudioComponents = {};
}

if (!global.ftAudioComponents[trackName])
{
var audioComponent = script.getSceneObject().createComponent("Component.AudioComponent");
audioComponent.audioTrack = audioTrackAsset;

global.ftAudioComponents[trackName] = audioComponent;
}

return global.ftAudioComponents[trackName];
}

// Allow fullscreen tapping if trigger is touch based
if (script.AnimationTrigger == "TouchStartEvent"
|| script.AnimationTrigger == "TouchStartEvent"
|| script.AnimationTrigger == "TapEvent")
{
global.touchSystem.touchBlocking = true;
global.touchSystem.enableTouchBlockingException("TouchTypeDoubleTap", true);
global.touchSystem.enableTouchBlockingException("TouchTypeSwipe", true);
}

var event = script.createEvent(script.AnimationTrigger);
event.faceIndex = script.faceIndex;
event.bind(triggerCallback);