As I understand we can’t make a bulk update of property? But how people workaround such a popular issue?
For me this need for task tracker where I have table User, which is linked to Tasks and Subtasks tables. So when the current user flags some task that has subtasks, I want to write the Task in the corresponding property of the User table (which is no problem there) and write all subtasks of the task in the subtask property of the User table respectively.
So far I could realize only writing the Task and first Subtask at once.
Will be glad to hear from you!