How to use Liferay.AutoFields events

[Esteban Gàlvez，修改在8 年前。]

Good morning everyone,
In a project I need to handle events that occur in Liferay.AutoFields.
I have implemented the events 'clone' and 'delete' but not undo. According to the documentation of Liferay is the OnClear event, but it does not work for me.
Can anyone help me?

<aui:script use="liferay-auto-fields">
 	new Liferay.AutoFields(
    {
    	contentBox: '#imputacion-fields',
        fieldIndexes: '<portlet:namespace />imputacionesIndexes',
       	on: {
       	 	'clone': function()		//Evento que se genera cuando se crea una linea nueva 
       	 	{
				...
		},
       		'delete': function(event) 
       		{
       			...
   	   	},
   	 onClear: function() {
         alert('All fields have been removed.')
  }
 	}).render();
</aui:script>

Thanks,