problem with uploading sketch using ArduinoCommander application to arduino uno

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hey,
i working on project includes use of arduinocommander application. have connected android phone v4.2.2 arduino uno via otg host cable , usb host a-host b cable. supplying external power supply of 9v arduino. facing problem uploading sketch arduino using application. problem when tap discover devices button under usb devices no response shown application i.e. not identifying arduino uno though supported application.  i tried changing baud rates of no use. tried application i.e. usb device info , detecting arduino uno proves there no problem android phone.i trying source code of application can make changes , possible?
so if can me solve problem.any kind of suggestions welcome.



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