WebDynpro (Fields modification)

Hello,
When select a leave request notification item from universal worklist, it opens a new page where you can approve or refuse an absence. I need to modify some fields of this screen. I tried with Content Admin and CTRL+Right Click on the field and I can see that it's ok on the preview. But it doesn't work from portal. I have modify: Leave Request: Approval iView - 'webdynpro:java/sap.com/ess~lea/com.sap.xss.hr.lea.appl.LeaveRequestApprover/base' but it only works on Content Admin/preview. If I try to modify it from UWL preview(Content Admin) there is no option to modify this screen.. Is not this iView?
Please, I need help..how can I do it?
Thanks

Hello Sudhir,
I have implemented the OUTPUT_Conversion method of the BAPI and the values are getting displayed from backend to Portal.
But when I am changing any values in EP for these added fields, the values are not getting saved in backend. I suppose there is some problem with the INPUT_Conversion method.
I have pasted below the code of the OUTPUT_CONVERSION method. Can you please let me know what will be the corresponding code for the INPUT_CONVERSION method.
OUTPUTCONVERSION method._
method IF_EX_HRPAD00INFTYUI~OUTPUT_CONVERSION.
FIELD-SYMBOLS <p0006>      TYPE p0006.
FIELD-SYMBOLS <r0006>      TYPE hcmt_bsp_pa_nz_r0006.
CASE screen_structure_name.
    WHEN 'HCMT_BSP_PA_PREF'.
      MOVE-CORRESPONDING pref    TO screen_structure.
    WHEN 'HCMT_BSP_PA_NZ_R0006'.
      ASSIGN pnnnn               TO <p0006>.
      ASSIGN screen_structure    TO <r0006>.
      MOVE-CORRESPONDING <p0006> TO <r0006>.
        Move <p0006>-INDRL to <r0006>-INDRL.
        Move <p0006>-COM01 to <r0006>-COM01.
        Move <p0006>-NUM01 to <r0006>-TELN1.
        Move <p0006>-COM02 to <r0006>-COM02.
        Move <p0006>-NUM02 to <r0006>-TELN2.
        Move <p0006>-COM03 to <r0006>-COM03.
        Move <p0006>-NUM03 to <r0006>-TELN3.
    WHEN OTHERS.
      MOVE-CORRESPONDING pnnnn   TO screen_structure.
      IF pnnnn2 IS SUPPLIED.
        MOVE-CORRESPONDING pnnnn2 TO screen_structure.
      ENDIF.
ENDCASE.
CALL METHOD cl_hrpa_field_attribs_services=>convert_and_merge_field_attrbs
    EXPORTING
      field_metadatas = field_metadatas
    CHANGING
      field_attributes = field_attributes.
endmethod.
Appreciate your inputs on this.
Regards
Deb

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