Enforce tag == session name(Untested)

Enforce tag == session name(Untested)

{
    "Version": "2012-10-17",
    "Statement": [
    {
            "Sid": "AllowIamUserAssumeRole",
            "Effect": "Allow",
            "Action": "sts:AssumeRole",
            "Principal": {"AWS": "arn:aws:iam::123456789012:user/external-user"},
            "Condition": {
              "StringEquals": {
                    "sts:RoleSessionName": "SomeExternalService",
                    "aws:PrincipalTag/ExternalService": "${sts:RoleSessionName}",
                }
            }
        },
        {
            "Sid": "AllowIamUserAssumeRole",
            "Effect": "Allow",
            "Action": "sts:TagSession",
            "Principal": {"AWS": "arn:aws:iam::123456789012:user/external-user"},
            "Condition": {
              "StringEquals": {
                    "sts:RoleSessionName": "MyExternalProject",
                    "aws:RequestTag/ExternalService": "${sts:RoleSessionName}",
                },
                "ForAllValues:StringEquals": {
                    "sts:TransitiveTagKeys": [
                        "ExternalService",
                    ]
                }
            }
        }
    ]
}