Problem in End Routine

Hi friends,

We are writing lookup code in endroutine at Infocube level. But we are getting some error.Please suggest me how to resolve those errors.We are new to ABAP.

Code:

types: begin of ls_sony,

sid type /bic/adso_stoc00-/bic/sid,

pid type /bic/adso_stoc00-/bic/sid,

end of ls_sony.

data: it_stoc type table of ls_sony,

         wa_stoc type ls_sony.

select sid pid from /bic/adso_stoc00 into table it_stoc for all entries in result_package

   where sid = result_package-/bic/sid.

loop at result_package assigning <result_fields>.

read table it_stoc into wa_stoc with key sid = <result_fileds>-/bic/sid.

if sy-subrc = 0

<result_fileds>-pid = wa_stoc-/bic/pid.

endif.

endloop.

error: 

unknown column name "sid" untill runtime, you cannot specify a field list.

Regards

Bhaskar