Call >net Dll from BRE

I am passing one object having two properties inside object to BRE. Then inside rule i have one rule which is compare (one of Object properties value in data base table  means object proerties ack as where condision value ) then getting other fields value of that row value assign to other properties of passed object.

My problem is I am not getting the value which is fetching from database and assign in BRE…

My Observation Inside BRE datbase field value is not assign to the object properties….

Please let me know where i am doing wrong…or provide me good reference so i can go thru…