Is it possible to pass username and roles with powerbi-node api?

I am happily using powerbi node api for getting reports, datasets, for uploauding reports etc.

But seems like it doesn't work with RLS and powerbi-node?

I am trying to pass user and roles and get correct token, but visuals are not displayed at all, getting error like - visual can not be displayed.. Dashboards without RLS works perfect using this method.

Maybe I am doing something wrong, here is code snippet I am using:

app.get ('/jwt/:collection/:workspaceid/:report_id/:user/:role', function(req,res) {
      var param = req.params;
      var token = powerbi.PowerBIToken.createReportEmbedToken(param.collection, param.workspaceid, param.report_id, param.user, param.role);
      var jwt = token.generate('fubar');
      res.send (jwt);
})