contacts duplicate check

Question

Hi. I'm trying to modify the duplicate check filter for Contacts module. I'm using the instructions at https://support.sugarcrm.com/Documentation/Sugar_Developer/Sugar_Developer_Guide_12.0/Architecture/Duplicate_Check/ 
 and have added the code below to the location ./custom/Extension/modules/Contacts/Ext/Vardefs/duplicate_check_email_v7_twitter.php The example removed the 'shipping_address_city' field, I have tried to use the same theory to add the 'twitter' field to test with but as far as I can tell it has made no difference. Can any of you see what the issue is please? 
 <?php

$dictionary['Contact']['duplicate_check']['FilterDuplicateCheck'] = array(
 'filter_template' => array(
 array(
 '$and' => array(
 array('twitter' => array('$starts' => '$twitter')),
 array('first_name' => array('$starts' => '$first_name')),
 array('last_name' => array('$starts' => '$last_name')),
 array('accounts.id' => array('$equals' => '$account_id')),
 array('dnb_principal_id' => array('$equals' => '$dnb_principal_id')),
 ),
 ),
 ),
 'ranking_fields' => array(
 array(
 'in_field_name' => 'twitter',
 'dupe_field_name' => 'twitter',
 ),
 array(
 'in_field_name' => 'account_id',
 'dupe_field_name' => 'account_id',
 ),
 array(
 'in_field_name' => 'last_name',
 'dupe_field_name' => 'last_name',
 ),
 array(
 'in_field_name' => 'first_name',
 'dupe_field_name' => 'first_name',
 ),

 ),
);
 
 Also, would the updated duplicate check happen at the point of entry like it currently does if it matches a name, or is this for the 'Find Duplicates' you can run when in a record? Thanks James

James Kinnersley · Answer

Take a look at the Leads' vardefs. You will see, pretty much, exactly what you want to achieve.