This is my solution :
Report.TextFileName := UniServerModule.LocalCachePath+StringReplace(UniMainModule.nombre, ' ','',[rfReplaceAll])+'.pdf'; //assign name and route to file
Report.Print; // send a message to report for print the file
ReporteForm.UniURLFrame1.URL := UniServerModule.LocalCacheURL+StringReplace(UniMainModule.nombre, ' ','',[rfReplaceAll])+'.pdf'; //Assign the route to url property of the uniurlframe
reporteform.show; // and display the report in new form, in new form only contain an UniURLFrame, I'm testing in Opera, Chrome and IE9
I hope that someone would be useful.