[Paraview] How to pass array from Server to Client with as 'Information Helper"

[Michael Jackson]

I have a custom reader. Part of the reader is getting a "NeighborList"  
which is an vtkIntArray object although I have declared the following  
methods in my "reader" class:

   int* GetNeighborList();
   void GetNeighborList(int* list);
   vtkIdType GetNumberOfNeighbors();

And in my ServerManagerXML file I have the following:
       <IntVectorProperty name="NeighborList"
         command="GetNeighborList"
         argument_is_array="1"
         number_of_elements="0"
         repeat_command="0"
         number_of_elements_per_command="1"
         use_index="0" >
         <SimpleIntInformationHelper />
         <Documentation>
             This property lists the neighbors of the grain
           </Documentation>
         </IntVectorProperty>

On the Client side I have the following bit of code to populate a  
QListWidget:

void pqH5TiDataReaderPanel::updateNeighborList(QListWidget*  
qListWidget, QString property)
{
   vtkSMProperty* smProperty = this->proxy()- 
 >GetProperty(property.toAscii());
   if (NULL == smProperty)
   {
     std::string msg = "SMProperty [int] was NULL for ";
     msg.append(property.toAscii() );
     DebugTrace(<< msg.c_str() );
     return;
   }
   vtkSMIntVectorProperty* intProperty
                     = vtkSMIntVectorProperty::SafeDownCast(smProperty);
   if (NULL == intProperty)
   {
     std::string msg = "Could not SafeDownCase to  
vtkSMIntVectorProperty for property ";
     msg.append(property.toAscii() );
     DebugTrace(<< msg.c_str() );
     return;
   }
   //intProperty->GetArgumentIsArray();
   int* elements = intProperty->GetElements();
   int nElements = intProperty->GetNumberOfElements(); //<== ALWAYS 0
   qListWidget->clear();  // Remove all the content

   for (int i = 0; i < nElements; ++i)
   {
     qListWidget->addItem(QString::number(elements[i])); //<==== NEVER  
GETS HERE
   }
}

So, what am I doing wrong? I have tried reading through the relevant  
sections of the "ParaView Guide" but nothing is really jumping out.  
Also went looking for examples somewhere in the ParaView source code  
but came up empty. The ContourWidget is close but it "sends" its  
array, it never receives one from the server.

Any pointers would be great and much appreciated.
___________________________________________________________
Mike Jackson                      www.bluequartz.net
Principal Software Engineer       mike.jackson at bluequartz.net
BlueQuartz Software               Dayton, Ohio