Workflow start script not working 2.0 preview

[pascalt]

Hi,

I've downloaded alfresco 2.0 preview.
When i try to execute the WIKI example to start a workflow, i get an error which says it can't read property parameters from null (var workflow) at line 2.
What can be wrong or is this a bug?

var workflow = actions.create("start-workflow");
workflow.parameters.workflowName = "jbpm$wf:review";
workflow.parameters["bpm:workflowDescription"] = document.name;
workflow.parameters["bpm:assignee"] = person;
var futureDate = new Date();
futureDate.setDate(futureDate.getDate() + 7);
workflow.parameters["bpm:workflowDueDate"] = futureDate; 
workflow.execute(document);
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[davidc]

This has been fixed in SVN HEAD.