SSHR: How to pass a different person id to Employee Self Service form

Hi,

Scenario:

Employee US is from US Business Group

Employee ASIA is from ASIA Business Group

Employee US logs into Employee Self Service form, and clicks on "Personal Information" 

-- he sees Employee US information, which is the default functionality, since the user account is tied to Employee US in FND_USER table.

Now without changing the user account to employee id tie in FND_USER, when Employee US logs in, he should see Employee ASIA and not Employee US

Is there any way this can occur?  I tried passing person_id = (employee ASIA's person id) when the function is called- though the person id gets passed, somewhere down the lane, Employee US's person id is again picked up.  So passing person_id through the function call doesn't work.  Call is as shown below: