Adding a one-to-many relationship between ProductTemplates and RevenueLineItems

I am trying to add a one-to-many relationship between ProductTemplates and RevenueLineItems without using studio so that I do not get a middle table.  This is using a technique described here - Programming and web resources » How to create an one-to-many relationship without an intermediate table in SugarCRM

Here is my new file (custom/Extension/modules/RevenueLineItems/Ext/Vardefs/parent_product_template.php):

<?php
$dictionary["RevenueLineItem"]["relationships"]["revenuelineitem_parent_product_template"] = array(
    'lhs_module' => 'ProductTemplates',
    'lhs_table' => 'product_templates',
    'lhs_key' => 'id',
    'rhs_module' => 'RevenueLineItems',
    'rhs_table' => 'revenue_line_items',
    'rhs_key' => 'parent_product_id_c',
    'relationship_type' => 'one-to-many'
);

$dictionary["RevenueLineItem"]["fields"]["revenuelineitem_parent_product_template_link"] = array(
    'name' => 'revenuelineitem_parent_product_template_link',
    'type' => 'link',
    'relationship' => 'revenuelineitem_parent_product_template',
    'module' => 'ProductTemplates',
    'bean_name' => 'ProductTemplate',
    'source' => 'non-db',
    'vname' => 'LBL_PARENT_PRODUCT',
);

$dictionary['RevenueLineItem']['fields']['parent_product_name'] = array(
    'name' => 'parent_product_name',
    'rname' => 'name',
    'id_name' => 'parent_product_id_c',
    'vname' => 'LBL_PARENT_PRODUCT',
    'type' => 'relate',
    'link' => 'revenuelineitem_parent_product_template_link',
    'table' => 'product_templates',
    'isnull' => 'true',
    'module' => 'ProductTemplates',
    'source' => 'non-db',
    'required' => false,
);

$dictionary['RevenueLineItem']['fields']['parent_product_id_c'] = array(
    'name' => 'parent_product_id_c',
    'rname' => 'id',
    'vname' => 'LBL_PARENT_PRODUCT',
    'type' => 'id',
    'table' => 'product_templates',
    'isnull' => 'true',
    'module' => 'ProductTemplates',
    'dbType' => 'id',
    'reportable' => false,
    'audited' => true,
    'duplicate_merge' => 'disabled',
    'source' => 'custom_fields',
    'required' => false
);

This does not seem to work, I think because the parent_product_id_c ID field is created on the custom table - product_templates_cstm.  I have tried changing the rhs_table field in the revenuelineitem_parent_product_template relationship to product_templates_cstm but this also does not appear to work.

Has anyone been able to achieve anything similar?