I'm having two problems with the task subpanel. (1) The due date will not populate (2) I can't get the parent name to show up in the header or in the list. The Admin Studio doesn't appear to do anything when I make changes there.

I've figured out the the data is populated from the Task/ForActivities.php file. I removed the status list and replace it with:
'parent_id'=>array(
'widget_class' => 'SubPanelDetailViewLink',
'target_record_key' => 'parent_id',
'target_module' => 'Contacts',
'module' => 'Contacts',
'vname' => 'LBL_LIST_RELATED_TO',
'width' => '11%',
),
The result is perplexing. The column header still says "status" but the list is populated with the parent's ID number
1) what file contains the column headers so that I can adjust it accordingly?
2) How do I get it to show the parent name instead of id?

Here is the code for the due date that doesn't populate:
'date_due'=>array(
'vname' => 'LBL_LIST_DUE_DATE',
'width' => '10%',
'alias' => 'date_due'
),
3) any idea why that doesn't show up?

Please help!