Access to the "global" object from JavaSCript used to work few month ago, but it's broken today

Hi,

The pivot is defined in this way : 

{
    "container": "pivot-container-grid",
    "componentFolder": "/XXX/",
    "global": {
        "dataSource": {
            "type": "Microsoft Analysis Services",
            "localeIdentifier": 1036,
            "proxyUrl": "http://xxx.com:50005",
            "catalog": "XXX",
            "cube": "XXX",
            "roles": "",
            "binary": true
        },
        "options": {
            "grid": {
                "showHeaders": false
            },
            "useOlapFormatting": true,
            "configuratorActive": false
        }
    },
    "toolbar": true,
    "width": "100%",
    "height": "100%",
    "licenseKey": "xxx"
}

NOTE the DataSource is defined at the "global" property, not in the Report (this is the need).

Now using JavaScript I need to define a MDX subQuery on the DataSource.

The code below used to work few months ago (I don't remember when exactly) :

let subQuery = "SELECT [Date].[Date].[All Periods] ON 0, [Measures].MEMBERS ON 1 From [XXX]";

if (subQuery != "") {
    let pivot = document.getElementById("pivot-container-grid").uielement.flexmonster;
    pivot.global.dataSource.subquery = subQuery;
    pivot.refresh();
}

The problem is today, using the lasted version (2.9.134) the "global" property at the "pivot" object does not exists anymore.

When how to modify the dataSource specified at the "global" level in this  case ?

Best Regards

Didier