Embedded start form: access logged in user

I am using the twitter example process. On the start-form , I have to enter email and message. Is there a way to prefill the email field with the email of the logged in user (using act_id_user)?

Hi, the logged in user is found on the rootscope. You can then make a REST call with this user id.

This is the only way you can achieve it on the start-form I think.