Problems with Dynamic Data Attachments

Hello, how are you? Some time ago I made a child form with dynamic data attachments; however, when I wanted the start and end of the group, the information stopped pulling and my “id” did not work, so I left it there. Now, I want to make a child form of this form and I don’t know what to put in the start and close part of the group, because I don’t have one.
Form_madre.xlsx (190.8 KB)
Form_SIS 003.xlsx (26.8 KB)

@juansaavedra29, I would advise you to go through this support article to learn more on how to set up and configure the Dynamic Data Attachment for your project first: