Programmatically Change Dropdowns in Sugar

en_us_lang.php

// custom/include/language/en_us.lang.php
$GLOBALS['app_list_strings']['sales_stage_dom']=array (
  'Prospecting' => 'Prospecting',
  'Qualification' => 'Qualification',
  'Needs Analysis' => 'Needs Analysis',
  'Value Proposition' => 'Value Proposition',
  'Id. Decision Makers' => 'Id. Decision Makers',
  'Perception Analysis' => 'Perception Analysis',
  'Proposal/Price Quote' => 'Proposal/Price Quote',
  'Negotiation/Review' => 'Negotiation/Review',
  'Closed Won' => 'Closed Won',
  'Closed Lost' => 'Closed Lost',
  'Interested' => 'Interested',
);

vardefs.php

// modules/Opportunities/vardefs.php 
$dictionary['Opportunity']['fields'] => array(
  'sales_stage' => array (
    'name' => 'sales_stage',
    'vname' => 'LBL_SALES_STAGE',
    'type' => 'enum',
    'options' => 'sales_stage_dom',
    'len' => '255',
    'audited'=>true,
    'comment' => 'Indication of progression towards closure',
    'merge_filter' => 'enabled',
    'importable' => 'required',
    'required' => true,
  ),
);