In a page with Programma objects I want to you a grid selector to select Cursus objects to add to the reference set but only if both share the same reference to an Opl object. I tried many ways but it does not work, reason I Need xpath as source for the grid is the option to count/sum columns... I solved the reference problem for now but I am curious what the xpath shoueld be, if possible... see part of model here
Arthur van der Molen
From your "Cursus" reference selector, you could use the following xpath to restrict the datagrid to show only courses related to the "opl" for the selected "Programma".
[CursusOpl/Opl/ProgrammaOpl = '%CurrentObject%'], where CurrentObject is the Program.