Using the Fill Utility on the table and/or fields you specify

We have a customized field in AX that we want the user to be able to select multiple records and change them all to the same value at once. Dynamics AX 2009 has a fill utility that can do this. However, the fill utility can only be used on tables that are "main" tables (property TableGroup = main). I wanted it to be able to be used on my custom field (a date field) on the SalesTable form. Here's what I had to do:
On the Form: SysRecordInfo, Method: init
Add code to allow the fill utility to be used on my table.
void init()
{
 ....
     // don't do the field level testing if the table doesn't meet the base requirement
    if (dictTable.tableGroup() == TableGroup::Main ||
        common.TableId == tablenum(LedgerJournalTrans)
        //N - GW_Admin_FillUtility - Arains 03/02/2012
        // Allow the fill utility to be used on the SalesTable
     || common.TableId == tablenum(SalesTable))
    {
        element.fillUtilityInit();
    }
    else
    {
        fillGrp.visible(false);
    }
 ....
}

Also, on the Method: fillUtilityInit
Add code to allow the fillUtility to be used for my custom field on the salestable and only my custom field on the SalesTable.

void fillUtilityInit()
{
....
 if (fieldIdLocal == dictTableLocal.primaryKeyField() ||
                        fieldIdLocal == dictTableLocal.fieldName2Id('RECID') ||
                        fieldIdLocal == dictTableLocal.fieldName2Id('DATAAREAID'))
                    {
                        fillGrp.visible(false);
                        return;
                    }

                    // New code for fill utility modifications
                    // If this is the salesTable and this is the custom date field
                    // allow the fill utility to be used, disallows for all other fields
                    if(tblId == TableNum(SalesTable) &&
                       fieldIDLocal != dictTableLocal.fieldName2Id('YourCustomField'))
                    {
                        fillGrp.visible(false);
                        return;
                    }
....
}