How To Pass Parameter In Max Aggregate Function

i have on table temp and it has column name fhID, now that column name and table name comes as parameter in stored procedure from c#.

now stored procedure has code somthing like below

@column nvarchar(50)

@tbname nvarchar(50) 

            -- both are parameter comes from c#

decalre @maxid

select   @maxid=max(@column) from @tbname

          rather than prints the maximum values of "fhid" it prints column name itself.

now i how can i achive actual working of max function using parameter.

is there any other way to pass parameter in aggregate function or it is not allowed to pass.???

plz help me,

thanks

vishal parekh

          'fhid'

now how can