Button on toolbar after executing the report i.e. after result display

Hi, after executing the report result is being displayed.Now at this stage I want a button on the application toolbar clicking on which will allow a perform to get triggered.

I tried in following manner:

SELECTION-SCREEN: FUNCTION KEY 1.

*INITIALIZATION.

TABLES: SSCRFIELDS.

*MOVE icon_mail TO sscrfields-functxt_01.

*form SEND_EMAIL .

IF sy-ucomm = 'FC01'.

PERFORM SEND_MAIL_ASSET_STATUS.

ENDIF.

But it's not ok.The above way is not working.

Please note: I want button on toolbar only after executing the report i.e. after result display.

How can I do this?

Kindly guide.

Best regards.