Access bodyTemplate's data context from footerTemplate

[Achtel]

Hi,

I'm using the modal to display an image and have rendered an icon in the footer to allow the user to delete the image. But I cannot seem to access the _id variable that was given to the modal as a {{title}} context. How can I achieve this?

<!--
// Modal template
-->
<template name="modalImage">
  <img src={{imageURL}} class="modal"/>
</template>

<template name="modalFooter">
  <div class="modal-footer">
    {{#if ownImage}}
      <a class='delete-image'><i class='fa fa-trash-o fa-2x'></i></a>
    {{/if}}
    <button id="closeButton" class="btn-flat btn-custom">Close</button>
  </div>
</template>

//
// Materialize modal-title
//
$(document).ready(function($) {
  $(document).delegate('*[data-toggle="materialize"]', 'click', function(event) {
    event.preventDefault();

    // retrieve image variables
    var _id = $(this).data("title");
    var _src = $(this).attr("href");
    var _user = (Images.findOne(_id, {fields: {'userId': 1}})).userId;
    var _ownImage = (_user === Meteor.userId());

    MaterializeModal.display({
      bodyTemplate: "modalImage",
      footerTemplate: "modalFooter",
      title: _id,
      imageURL: _src,
      ownImage: _ownImage
    });
  });
});

Template.modalFooter.events({
  'click .delete-image': (event) => {
    event.preventDefault();

    MaterializeModal.confirm({
      title: "Confirm Delete",
      message: "Are you sure you want to delete this image?",
      callback: function(error, response) {
        if (response.submit) {
          console.log(_id);
          Images.remove({_id: _id}, function(error, result) {
               if(error) {
                 Bert.alert( error.reason, 'danger' );
               } else {
                 Bert.alert( "Image deleted", 'success' );
               }
               // end else
             });
             // end Images.remove
        }
      }
    });
  }
});

The console.log throws a Reference error stating that _id is not defined. Same issue if I try title...