I tried to set a customization field (attribute field) from a non-null value to NULL using
but this does not work for any reason, because after save there is no change neither in database nor in the form. A clear_item will also not work due to the mission option of go_item to an attribute field.
go_item('ORDER.ATTRIBUTE1'); -- this will not work, even not throw an error
clear_item; -- this happens at the wrong field
What else can I do to clear this field progammically?
Many Thanks in advance.