I have created a form that has two tables. the main table is the entity type and the other is a multivalued attribute in it. The two tables are "Customer" and "Phone Numbers" respectively. My problem occurs when i run the form and enter the data. the data in the customer is entered correctly but the problem occurs when i try to enter data into the boxes of the phone numbers. after i try to save it gives me a message "Do you want to save changes?". The data entered in "Phone Numbers" cannot be added. I appreciate your help and thanks for your time.