AML syntax for methods called from AML Studio or Innovator Admin tool

• We needed to call methods like StartWorkflowfrom AML Studio or Innovator Admin tool but we cannot figgure out the right syntax. Following AML returns an error:
  • <AML>
    <Item action='startWorkflow'type="Workflow Process"id="305F5FC94C3D4C1DBE6BB7298D1149F7"></Item>
    </AML>
  • Error: Source item for Workflow Process not found
• Is there any general guidance how to use methods from AML?

Thank you in advance