How to modify datalist in EC

Hi all,

I have requirement to display accounts which are in relationship to root account.

for example : Building1(account) Has an owner Account 2

                        and Building2(Account) has an owner Accoun2.

So if you check the account2's TI's Relationship tab there will be 2 reverse rel code : "is an owner of building1, is an owner of building 2. "

Now That Owner might have some other relationships as well and hence I have created my custom EC. But in datalist I can only bind with only two Queries.  QuerybyCommunication and QuerybyIdentification.

Can I create my own query? or can I write some code to populate my datalist?

Regards,

Dhruvin