how to use an helper with parameter in perl web framework mojolicious

on template something like:

<%== getImagebyObjectId $obj->id %>

on app:

  $self->helper( getImagebyObjectId => sub {
    my ($self, $param) = @_;
     my $objectsdata=$self->db->resultset('Objectdata')->find({ idobject=>$param });    
     #$self->render_text($objectsdata->name);
    return $objectsdata->name;
  });

Basics: here.