The syntax using the / character is now obsolete. Please use the <> stereotype instead. For more details, visit https://plantuml.com/activity-diagram-beta Contractor Engineer Propose this is the action State = Proposed this is the state set in the system If accepted = No, need to set state to "Revise" and go back to before "Propose". Review How can I insert an orange State shape in the "NO" arrow? NO, REVISE Accepted? YES State = Accepted if the item is accepted, the Engineer sets the state to Accepted