Group filter in XML Data Template

Hi All,

How to call Group filter which is having update table code(calling update table procedure) in XML data template

FUNCTION G_inv_termgroupfilter(customer_trx_id	IN NUMBER,
	term_count	IN NUMBER,
	term_relative_amount   IN NUMBER,
	term_sequence_number   IN NUMBER,
	trx_type	IN VARCHAR2,
	printing_original_date IN DATE,
	printing_count	IN NUMBER)

RETURN BOOLEAN

IS

  cust_trx_id  NUMBER;

  v_term_amt   NUMBER;

  v_term_num   NUMBER;

v_date

DATE;

  v_print_cnt  NUMBER;

  v_trx_type   VARCHAR2(80);

  v_term_count NUMBER;

BEGIN

	v_term_amt:=term_relative_amount;
	v_term_num:=term_sequence_number;