Unable to change speaker and microphone gain

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Hi,
Using D-Bus API (SetSpeakerGain() & SetMicrophoneGain()) I am changing
the speaker & microphone gain of Headset.
Whenever I use this API to change the gain value , Signal
SpeakerGainChanged & MicrophoneGainChanged emitted by bluetoothd, It
shows me the same value as I have set.
i.e if I set speakergain to 10, signal SpeakerGainChanged shows me 10.
But it doesn't affect the HS actual gain(i.e. on impact on actual
voice on HS ) it remains as it is.

Can somebody suggest me what I am missing??

-- 
With Regards,
Nirav Rabara
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