Extension - Access items properties

[#1]

Hello

I´m trying to create a field type item (qLink) inside a measure for an extension. However I´m not capable to access this parameter from the hypercube

define( [], function ( ) {
  var palette = [
        "#b0afae",
        "#7b7a78",
        "#545352",
        "#4477aa",
        "#7db8da",
        "#b6d7ea",
        "#46c646",
        "#f93f17",
        "#ffcf02",
        "#276e27",
        "#ffffff",
        "#000000"
    ];
  return {
       type: "items",
       component: "accordion",
       items: {
       measures: {
       uses: "measures",
       min: 1,
       max: 50,
       items: {                                        
            qLink: {                            
                 type: "string",                  
                 ref: "qLink",                    
                 label: "Link da medida",
                 expression: "always",            
                 expressionType: "dimension"
            }
       }
  },
     ... 

I have already tried:

this.backendApi.eachDataRow(function(rownum, row) {
     measurerows = row;
});
html +=measurerows[1].qMeasureInfo;

And

layout.qHyperCube.qDataPages[0].qMatrix[0]

However no success....

Anybody knows how to access this information?

Thanks for the help