I can’t find the correct postman url to retrieve the children of an area

Hello,

I try to retrieve the children of an Azure DevOps area using Postman.
My URL : https://tfs01.red.organisation.com/organisation/project/_apis/wit/classificationnodes/Areas?depth=10&api-version=7.0

The result :

{
    "id": 6,
    "identifier": "c8a8bd02-ffc8-4c49-a2d4-acc2df90f110",
    "name": "ReD",
    "structureType": "area",
    "hasChildren": true,
    "path": "\ReD\Area"
}

So if I’m not wrong, to retrieve the children I need to do :
https://tfs01.red.organisation.com/organisation/project/_apis/wit/classificationnodes/Areas/Red/Area?depth=10&api-version=7.0

But the return message is :

{
    "$id": "1",
    "innerException": null,
    "message": "VS402485: The Area/Iteration name is not recognized: ReD\Area",
    "typeName": "Microsoft.TeamFoundation.WorkItemTracking.Server.Metadata.WorkItemTrackingTreeNodeNotFoundException, Microsoft.TeamFoundation.WorkItemTracking.Server",
    "typeKey": "WorkItemTrackingTreeNodeNotFoundException",
    "errorCode": 0,
    "eventId": 3200
}

I missed something but I don’t know what… Maybe something with the ” before the name ? I already tried to escape them with %5C without success, the result is the same

Thanks for any help you can provide