We are allowing dragging and dropping multiple tasks to different columns/swimlanes. And we're gonna validate the action of drag-and-dropping each tasks separately via api call to our backend. We are using beforeTaskDrop
https://www.bryntum.com/docs/taskboard/api/TaskBoard/view/TaskBoardBase#event-beforeTaskDrop
If this listener returns true, all cards goes to desired position. If false, all cards goes back to previous position. Is there anyway to make some of these actions succeed and some of them fail?