How to set focus and mark red on certain select option field

hi experts
I embedded a select_option view in my application and tried to use IF_WD_SELECT_OPTIONS->request_focus to set focus on a certain select option field if the logical check failed, and also hope the low field of the select option can be marked red....but things does not happen that way....
could anyone kindly tell me how to implement that requirement?
tkx and regards
sun

What is the problem you are facing in this ?
Requesting focus is easy.
just call the method request focus and pass the id of the parameter whose lower value field you want to focus.
as shown below.
code you might have written in wddoinit
DATA: LT_RANGE_TABLE TYPE REF TO DATA,
        RT_RANGE_TABLE TYPE REF TO DATA,
        READ_ONLY TYPE ABAP_BOOL,
        TYPENAME TYPE STRING.
    DATA: LR_COMPONENTCONTROLLER TYPE REF TO IG_COMPONENTCONTROLLER,
        L_REF_CMP_USAGE TYPE REF TO IF_WD_COMPONENT_USAGE.
*   * create the used component
L_REF_CMP_USAGE = WD_THIS->WD_CPUSE_SELECT_OPTIONS( ).
IF L_REF_CMP_USAGE->HAS_ACTIVE_COMPONENT( ) IS INITIAL.
    L_REF_CMP_USAGE->CREATE_COMPONENT( ).
ENDIF.
    WD_THIS->M_WD_SELECT_OPTIONS = WD_THIS->WD_CPIFC_SELECT_OPTIONS( ).
    WD_THIS->M_HANDLER = WD_THIS->M_WD_SELECT_OPTIONS->INIT_SELECTION_SCREEN( ).
LT_RANGE_TABLE = WD_THIS->M_HANDLER->CREATE_RANGE_TABLE( I_TYPENAME = 'ZDEALERID' ).
* * add a new field to the selection
WD_THIS->M_HANDLER->ADD_SELECTION_FIELD( I_ID = 'ID'
IT_RESULT = LT_RANGE_TABLE I_READ_ONLY = READ_ONLY ).
code for focusing a field.
wd_this->m_handler->request_focus( i_id = 'ID' ).
you must have declared attributes m_handler and m_wd_select_options type reffering to IF_WD_SELECT_OPTIONS and
IWCI_WDR_SELECT_OPTIONS respectively.
and regarding that red color i am not sure it is possible without using message manager.
thanks
sarbjeet

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praveenkumar_81 wrote:
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