Print Image on android/ delphi 11 - milestone p8001

the code to print to printer not work and printer not response

FMileStonePrinter:= TJPrinterInstance.JavaClass.init(Fcontext,FDevicePareado,FHandler);
FMileStonePrinter.init;
FMileStonePrinter.openConnection;
FMileStonePrinter.printImage(j_Bitmap);
FMileStonePrinter.closeConnection;