This is currently a limitation of the Datagrid 2 (and other pluggable widgets). This is something we will plan to fix in the future.
Can you show your page design? Maybe the dataview is somehow out of scope.
Listen-to-widget is possible with DataGrid2. See the answer to this forum-question: https://forum.mendix.com/link/questions/110821. It takes some work, a lot clicks to get there and an extra entity, but it works flawlessly.
Hopefully Mendix will improve the DataGrid2 soon.
Hi Andreas Blaesius,
Iam adding the pics here that I did the design with DataGrid 1.
1.First Pic shows the list of task and subtask. Subtask is listening to the grid Task Using DataGrid 1
2.the below pic shows the list of task and subtask using DataGrid 2. BUt in this case subtask is not listening to Task.
it is solved with the latest version of Studio pro, i am using 10.6