i want to have 6 or 7 dates with some difference in days,not only one

i need some 6 fileds of date.

Ex: v-date = sy-datum.

v_date = sy-datum

v_date1 = sydatum-30.

v_date2 = sydatum-60.

v_date3 = sydatum-90.

v_date4 = sydatum-120.

v_date5 = sydatum-150.

v_date6 = sydatum-180.

instead of this can we use some diff code........

with only one function module we shud have to give all the variables.......

is it possible----