Retrieving Value

i am using a stored procedure, lets say spTemp, that calls sp_executesql within it. in the sp_executesql procedure i am passing parameters from the stored procedure 'spTemp'. i want to retrieve the result of the sp_executesql statement so as to perform further calculations in spTemp. is there a way of doing this?

ex:

create procedure spTemp
(
@abc int
)
as
declare @temp int
exec sp_executesql 'select @temp = Id from Product where @abc > 10'
...


how to get the value @temp from this statement?