How to refresh MessageChoice in advanced table on LOV change?

Question

I have an advanced table for data entry. One column has Employee Name, which is an LOV. Another column is a MessageChoice, listing eligible elements for that person. Everything works fine when the page is first loaded. This is the code I'm using in processRequest to set up the MessageChoice: The MessageChoice is set up using a PicklistViewDefinition (not instance) as each row has to have different selections.
OAAdvancedTableBean table = (OAAdvancedTableBean)webBean.findChildRecursive("TimeEntryTbl");
OAMessageChoiceBean elePoplist = (OAMessageChoiceBean)table.findChildRecursive("ElementSelect");
elePoplist.setListVOBoundContainerColumn(0, table, "EmployeeGroupName");
elePoplist.setListVOBoundContainerColumn(1, table, "PeriodEndDate");
elePoplist.setListVOBoundContainerColumn(2, table, "AssignmentId");
elePoplist.setPickListCacheEnabled(false);
The problem is when a new row is added, initially the poplist will be empty, which is expected. After choosing a value from the Employee LOV, the AssignmentId (which is a FormValue) will be populated. At this point, I need the Poplist to refresh to get the correct list of elements. I'm not sure how to make the poplist refresh. In ProcessFormRequest, I have:
if (pageContext.isLovEvent())
String lovInputSourceId = pageContext.getLovInputSourceId();
System.out.print("lovsource=" + lovInputSourceId);
And it prints the correct lov source. The dev guide says you can invoke an AM method there... but what should the AM do? I'm not sure how to refresh a poplist for a specific row when it is defined in an advanced table with Bound container columns, using a picklist view definition.

Answer 1

I looked through that thread, but nothing in there seemed to really directly address my problem. The solutions in there seemed to be to make view instances instead of using the bound container columns.
But, to answer my own question, I think I found the solution, which so far seems to be working ok...
if (pageContext.isLovEvent())
String lovInputSourceId = pageContext.getLovInputSourceId();
if ("PersonSelect".equals(lovInputSourceId))
pageContext.setForwardURLToCurrentPage(null, // no parameters to pass
true, // retain the AM
OAWebBeanConstants.ADD_BREAD_CRUMB_NO,
OAWebBeanConstants.IGNORE_MESSAGES);
Which basically just refreshes the page so all the MessageChoice fields are re-populated based on the latest information in the row. No need to automatically re-execute any VOs and let's OAF do it's own thing to maintain them.