Publications with Relations

I recently added the lepozepo:publish-with-relations package to my project and I am trying to publish a shopping cart.

The Publish JS is
` Meteor.publish(“cart”, function(ops) {
if (ops == null) {
ops = {};
}
});

if (ops.cotizacion && !_.isEmpty(ops.cotizacion)) {
this.relations({
collection: Cotizaciones,
filter: {
_id: ops.cotizacion,
status: “new”
},
mappings: [
{
key: “cotizacion”,
collection: CotDetails,
options: {
limit: 25
},
mappings: [
{
foreign_key: “codigo”,
collection: Productos
}
]
}
]
});
}

this.ready();``

and the subscribe is

Template.CotIzq.onCreated(function() {
var self;
self = this;
return self.autorun(function() {
return self.subscribe(‘cart’);
});
});

If I add the autopublish package I can see the publication. So I know the problem is here