How do I pre populate a form based on a project plan?


I have a simple form that I created to capture time spent on tasks of a project plan. I would like to have the link (in each row of the project plan) populate the form for the User, phase, task and date of the project.

An example of the test I was running for the user is smartsheeturl?User="Assigned%20To]@row  

When I use this all I get is the Assigned To@row in the form. What am I doing wrong?