Access custom fields of Project Server from workflow

I've defnied Enterprise Custom Field in my Project Server Settings. I am using this DM Dynamic Workflow:

http://archive.msdn.microsoft.com/P2010SolutionStarter/Release/ProjectReleases.aspx?ReleaseId=4456

How can I get my custom field value from workflow?

I tried with view.asmx service, but no luck...

This is exactly what I need, but it doesn't work, I can't even instantiate View()
http://www.projectserver2010blog.com/2010/03/project-server-2010-accessing-intrinsic.html

Error:

The type 'Microsoft.Office.Project.Server.WebServiceProxy.View' has no constructors defined