Trying to construct a message port on a non-plugin thread:

I'm attempting to get the user's info for a sign up flow in a scene graph component.

I read that I'll need to construct the store object inside of Task. I also need to assign a port as described in the documentation so I can pull the user's info. I end up getting an error when running this code:

<component name="storeRegister" extends="Task">

<script type="text/brightscript" >
<![CDATA[

sub init()
	store = CreateObject("roChannelStore")
	port = CreateObject("roMessagePort")
	store.SetMessagePort(port)
	testUser = store.GetPartialUserData("email, firstname")
end sub

Error:

BRIGHTSCRIPT: ERROR: roMessagePort: Trying to construct a message port on a non-plugin thread: ...IQ/pkg:/components/store_register.xml(12)

013:* store.SetMessagePort(port)

How are others accessing store user data from within the scene graph API?