Create a table with three cells.
First cell datagrid with entity AAA
Second cell dataview of AAA but let it stay empty, but let is listen to grid 1. Place datagrid with relation BBB_AAA/BBB inside this dataview.
Third cell dataview of BBB but again empty and let it listen to the second grid. Place inside datagrid with relation CCC_BBB/CCC.
Do not forget to place select buttons.
Ronald
Thats perfectly possible.
Just add an dataview for BBB in the dataview of AAA which listens to the grid which displays the BBB. In the added dataview put an datagrid with the CCC's.
Insert a dataview below the BBB datagrid and select the entity from the association. You can insert a datagrid CCC within the dataview. Be sure to set the listen property of the dataview on datagrid BBB.