fire alarm done, but the button will restart it after initial pressing

Assets/_PROJECT/Scripts/Audio/FirstPersonOcclusion.cs

@@ -187,6 +187,11 @@ public class FirstPersonOcclusion : MonoBehaviour
     }
 
 
+    public bool HasInstance(EventInstance instance)
+    {
+        return managedInstances.Contains(instance);
+    }
+
     private void SetParameter()
     {
         float occlusionValue = lineCastHitCount / 11;