Retrieving Data of Child Entities (MDS API)

Hi,

I am writing a customized application using MDS API.

Have anybody worked on retrieving data of child entities, if so can you help me with that? 

I have created a Domain Based attribute in child table and trying to retrieve data by setting property

request.MembersGetCriteria.SearchTerm = "ID= '" + value + "'";

it doesn't return any counts but when I use same code with any other attribute instead of domain attribute it return counts of records.

Anyone knows about this?