GetWorkItemReassignUserList Resource Error

I can pasted a call in a browser based on the documentation -

https://pdm-XXXX.com/Windchill/servlet/odata/Workflow/GetWorkItemReassignUserList(WorkItems=@wi)?@wi=[OR:wt.workflow.work.WorkItem:243012721]

abd  see alist of users for Reassign. This is based on the documention. 

Documentation shows - GET /Windchill/servlet/odata/Workflow/GetWorkItemReassignUserList(WorkItems=@wi)?@wi=["OR:wt.workflow.work.WorkItem:232279","OR:wt.workflow.work.WorkItem:232290","OR:wt.workflow.work.WorkItem:232297"] HTTP/1.1

Using an Odata Connector I have the endpoint below that will only returns Resource errors or missing alias (v3)

ThingWorx endpoint -GetWorkItemReassignUserList(/v4/Workflow/GetWorkItemReassignUserList(WorkflowItems=@WorkItems) GET)

How do you add an alias to the call