Hi...
we've developed a display session whose field values are imported to a new maintain session. The field values in the display session are selected by marking a line of records. On marking system automatically displays the value on to the fields of maintain session.

But when i try to undo the modifications(automatic population), it does nothing, system control never goes to section choice.recover.set

what would be the cause ... Please help

Refer to the functions - blank.all() (http://www.baanboard.com/programmers_manual_baanerp_help_functions_form_and_form_field_operations_blank_all) and set.fields.default() (http://www.baanboard.com/programmers_manual_baanerp_help_functions_form_and_form_field_operations_set_fields_default)

It helps if you post your code then others can suggest changes.