PivotFilter doesn't work Google App Script

Question

I've some tabular datas in a google sheet submitted via Gform with approximatively this schema:

chronological info, email,item,quantity, label,other fields, date,other fields,total order

Programmaticaly I create some report with pivoTable (in other reports I've only filterd for today date) Now My desire was have a report of all -email (row) -summarizing the value of total order -filter for date==TODAY (filter) -filter for a particular label (second filter)

Problem: I obtain an empty report. This happen only adding the second filter (this result is wrong with my data). I've tested and second filter programmaticaly and doesn't work: the filter appears correct but the pivot table has not results, despite doing it totally manually works. definitively I don't know how use setVisibleValue Filter with PivotTable

code si approximately like this:

 let sourceData = SpreadsheetApp.getActive().getRange('\'Risposte del modulo 1\'!A:I')
  let label='a label'
  let critbuilder= SpreadsheetApp.newFilterCriteria();
  let filtertoday=critbuilder.whenDateEqualTo(SpreadsheetApp.RelativeDate.TODAY).build()
  let filterclasse=critbuilder.setVisibleValues([label]).build();
  
  let pivotTablePerClassi=SpreadsheetApp.getActive().getRange('\'Report\'!A1').createPivotTable(sourceData);
  let pv = pivotTablePerClassi.addPivotValue(9, SpreadsheetApp.PivotTableSummarizeFunction.SUM); //9 total order
  let pivotGrouppa = pivotTablePerClassi.addRowGroup(2); //email second column
  pivotTablePerClassi.addFilter(7,filtertoday); //today filter
  pivotTablePerClassi.addFilter(6,filterclasse);