Refresh Files grid on upload complete

[dtpinformatica]

I'm trying to refresh the files grid on upload complete
anyone can help me?

I Tried to change
SharePointUploadControlVM.ts
30 this.controlContext = serviceProvider.get<ControlContextService>(ControlContextService.serviceProviderName);
to
30 this.controlContext = serviceProvider.get<PCFControlContextService>(ControlContextService.serviceProviderName);

and added to PCFControlContextService.ts

  notifyOutputChanged(): void {
    this.notifyOutputChangedCallback();
  }

but if i define a Changed Callback on PowerPlatform it isn't fired

can anyone help me?