When calling flexmonster.save({})

Hi, I'm having a problem where when I call the method save(), after the user edited a cell on drillthrough or even on flat mode, the data that is send on the request is not updated according to the edition made by the user. Note that im using server destination.

save() {
    this.pivotTable.flexmonster.save({
      filename: 'report.json',
      destination: 'server',
      url: `myURL`,
      serverContentType: 'application/json',
    });
}