Apply Slicer on Report Load

I have an embed Bi report.    I need to preset a filter on the report.    I can get this working when I run the first piece of code AFTER the report has finished loading.   I need this to be done before so that the filter is pre applied.  I have tried following the instructions and appeding the slicers to my initial config using the second peice of code but it does not work.

setFilter1() {
    this.biReport.getPages()
      .then(function (pages) {
        var firstPage = pages[1];
        firstPage.getVisuals()
          .then(function (visuals) {
            let visual = visuals.filter(x => x.title === 'Current/Previous Month')[0];
            if (visual) {
              const basicFilter = {
                $schema: 'http://powerbi.com/product/schema#basic',
                target: {
                  table: 'WorkOrdersView',
                  column: 'Current/PreviousMonth'
                },
                operator: 'In',
                values: ['Current Month'],
                filterType: pbi.models.FilterType.Basic
              };
              visual.getSlicerState().then(slicer => {
                slicer.filters = [];
                visual.setSlicerState({
                  filters: [basicFilter]
                }).then(s => {
                  this.myslicers = s;
                }).catch(errors => {
                  console.log(errors);
                });
              });
            }
          });
      });
  }

 slicers = [
    {
      selector: {
        $schema: 'http://powerbi.com/product/schema#visualSelector',
        visualName: 'c21a3d6790798afcfb8c'
      },
      filters: [
        {
          $schema: 'http://powerbi.com/product/schema#basic',
          target: {
            table: 'WorkOrdersView',
            column: 'Current/PreviousMonth'
          },
          operator: 'In',
          values: ['Current Month']
        }
      ]
    }
  ];
  embedConfig = {
    type: 'report',
    id: '',
    slicers: [this.slicers],
    embedUrl: '',
    tokenType: pbi.models.TokenType.Embed,
    accessToken: ''
  };