luos/workflow/engine/methods/bpmn/proxyTaskSteps.php

<?php
try
 {
   G::LoadClass('processMap');
   $oProcessMap = new processMap(new DBConnection);
   if ( isset($_GET['pid'] ) )
   {
       //Getting available Steps Criteria that have been not selected for a particular task
       $rows = $oProcessMap->getExtAvailableBBCriteria($_GET['pid'], $_GET['tid']);
       array_shift($rows);
   }
   else
   {
       //Getting all Steps Criteria that have been selected for a particular task
       $rows = $oProcessMap->getExtStepsCriteria($_GET['tid']);
       array_shift($rows);
   }

   $result['totalCount'] = count($rows);
    $result['data'] = $rows;
    print G::json_encode( $result ) ;

 }
  catch ( Exception $e ) {
  	print G::json_encode ( $e->getMessage() );
  }

?>