ZFunciton module in exit_saplrrs0_001

Hi All,

We have a requirement like create four customer exist based on four date info objects,which would calculate only factory date.

factory date logic is to calculate only working day excluding all holiday/bank holiday.

My doubt is:

suppose if we plan to use four infoobject at a time as a input variable,which all functionality are same.Is it possible,technically feasiable.

for instance:

in the report main screen:

wo date          variable   from --------------   to--------------------

planned date  variable   from --------------   to--------------------

com       date  variable   from --------------   to--------------------

dcom      date  variable   from --------------   to--------------------

these four variable going to use the same function module which has been mentioned in the customer exit exit_saplrrs0_001.is it technically feasiable.then how.

Please suggest me on the same.

Regards,

Sakthivel S