Count/sum Function Query

create function mytotalcount

(@audit varchar(50), @startdate datetime, @enddate datetime)

returns table

as

return

(

select t.value,sum(t.countvalue) as totalcount from
(

select

sm.value,count(sm.value) as countvalue

from subjectbase s
join stringmap sm
on s.organizationid = sm.organizationid

inner join audit a
on s.subjectid=a.subjectid

inner join incidentbase i
on i.subjectid=s.subjectid

where a.auditid= @audit and (i.modifiedon between @startdate and @enddate) and
sm.attributename = 'contractservicelevelcode' and
sm.ObjectTypeCode = 112

group by sm.value

) t

group by t.value

)

value totalcount
------------------
NHLBI Employee329
NIH Employee329
Public329
VIP329


instead of different values i m getting same...
there is something wrong in joins..can anyone help me?

thanks.