how to write a call function to get date using start routine

  HI Experts,

I am new to BI .I am trying to write a call function and get the date so how can i do this in start routine

CALL FUNCTION 'SLS_MISC_GET_LAST_DAY_OF_MONTH'.

SELECT * FROM /bi0/memployee INTO TABLE lt_empmaster WHERE
      objvers = 'A' AND dateto GE sy-datum AND datefrom LE sy-datum.

Thank you

Srinivas G