<?php

foreach ($js_groupings as $key => $groupings)
{
    foreach  ($groupings as $file => $target)
    {
         //if the target grouping is found
        if ($target == 'include/javascript/pmse.designer.min.js')
        {
            //append the custom JavaScript file
            $js_groupings[$key]['custom/include/javascript/pmse/toupper_action.js'] = 'include/javascript/pmse.designer.min.js';
        }
        break;
    }
}