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PowerBI custom visual dataView matrix valueSource is empty

I am currently trying to port a PowerBI visual from API Version 1.0.0 to Version 1.1.0.

I am creating a Visual with a matrix as a dataView. To this point my Visual works. But when I try to check if a have a valueSource for my matrix, I get returned by calling console.error(dataView.matrix.valueSources.length = 0), that: dataView.matrix.valueSources.length = 0.

In a converter Method, I'm trying to iterate over my valueSources and for each valueSource I try call addTreeChildrenValues() and then push my columns.


public update(options: powerbi.extensibility.visual.VisualUpdateOptions) {
var dataView = this.dataView = options.dataViews[0];
var viewModel: FormattedColumnsViewModel = FormattedColumnsVisual.converter(dataView);

public static converter(dataView: DataView): FormattedColumnsViewModel {
for (var i = 0; i < dataView.matrix.valueSources.length; i++) {
FormattedColumnsVisual.addTreeChildrenValues(values, dataView.matrix.rows.root.children, i); columns.push({ headerCaption: dataView.matrix.valueSources[i].displayName, values: values, formatOption: formatOption, showNumbers: showNumbers, width: width, leftMargin: leftMargin, usableWidth: usableWidth, fullRange: fullRange, zeroPosition: zeroPosition, formatter: formatter }); }

My question is:

  1. Why is valueSources of dataView.matrix empty?
  2. Does it have something to do with my capabilities.json file?

Capabalities.json (part of it):

  "dataRoles": [
      "name": "Category",
      "kind": 0,
      "displayName": "Category"

      "name": "Column",
      "kind": 1,
      "displayName": "Value" 
  "dataViewMappings": [
      "matrix": {
        "rows": {
          "select": [ { "for": { "in": "Category" } } ],
          "dataReductionAlgorithm": { "top": { } }
        "values": {
          "for": {"in": "Column"} 


Community Support
Community Support



The default API version for new visuals has been changed to 1.2.0. You may check the capabilities JSON schema at For tips about debugging your custom visual, see the debugging guide.

Community Support Team _ Sam Zha
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

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