[SOLVED] How to close all the other related work items when a work item is closed?

Actually, I am writing MSFlow to automate some DevOps actions. I am able to retrieve all the related work items of a work item through the below API.

But I don't know how to close \ how to change the state of those work items automatically. I can't see any APIs. Can someone help me with this?

You can use the Work Items - Update API:

PATCH https://dev.azure.com/{organization}/{project}/_apis/wit/workitems/{id}?api-version=6.1-preview.3

In the body update the State field:

{
  "op": "add",
  "path": "/fields/System.State",
  "value": "Closed"
}