Problem with entity- set_property. Does not set the value on Save

Question

There is a custom field enhanced in BP_HEAD component in node header structure.
Code to set the property is written in do_prepare_output method. This value gets set with X after BACK from contact details.
I see the value X before Save of the account details. After Save, the set_property does not work and so the value is not displayed.
Please help to explain what could be the reason and how to rectify it.
Note: Before Save, If I select Edit I see the value on the field. If I select Save after the Edit. The value is retained.
This issue occurs only when new account details is Saved.

Answer 1

Hi ,
The set_property( ) does not work if the field is non-editable. You have to make sure that you do this operation only for fields which are editable.
Also if you done a set_property(   ), make you perform a modify also and there should be a save followed by a commit ( framework does it for you or you do it manually).
* 1. Lock an entity and modify a property
* here booking entity with technical name u2018UIFBokkingu2019
2 Basic Features of the BOL Application Programming Interface
<January 2009> 19
lv_booking = lv_flight->get_related_entity(
u2018FlightBookingRelu2019 ).
IF lv_booking->lock( ) = ABAP_TRUE.
lv_booking->set_property( iv_attr_name = u2018SMOKERu2019
iv_value = u2018Xu2019 ).
ENDIF.
* 2. send all changes to BO layer
lv_bol_core->modify( ).
* 3. get the implicitly created global transaction
DATA: lv_transaction TYPE REF TO if_bol_transaction_context.
lv_transaction = lv_bol_core->get_transaction( ).
* 4. save and commit your changes
lv_transaction->save( ).
lv_transaction->commit( ).
Regards
Kavindra