Seed Data parameter isn't working

Summary

How to get the seed_data parameter to work

Content

I have a customer portal php page that is parsing out the seed data parameter from a URL.

The code is below.

The seed_data parameter is receiving a string called existing_i_id=123456, where 123456 is the incident ID.

The global attribute in OPA is the existing incident id, named as existing_i_id and set to map in from a <url parameter>.

However, the model will not load using the seed data.  I even tried hard coding the seed data into the php page and still the model won't load it.  The model will start without data if I do not use the seed data parameter in the call.