Mutable Live Data not sending value in Fragment second time in Android

This is my vide Model :

class Rove2LiveVideoViewModelImpl @Inject constructor(
    override val stateLiveData: MutableLiveData<CameraR2Status>,
    private val roveR2UseCase: RoveR2UseCase,
    private val roveR2LiveVideoUseCase: RoveR2LiveVideoUseCase,
    private val appPreference: AppPreference
) : Rove2LiveVideoViewModel(), RoveR2UseCase.Callback, RoveR2LiveVideoUseCase.Callback {
    init {
        roveR2UseCase.setCallback(this)
        roveR2LiveVideoUseCase.setCallback(this)
    }
    override fun onSuccessAudioMode(response: CardStatusResponse?) {
                stateLiveData.value = AudioModeStatus(response?.status.toString())
            }
        
            override fun onSuccessUpdatedRecordingStatus(response: CardStatusResponse?) {
                stateLiveData.value = RecordingStatus(response?.status.toString())
            }
        
            override fun onSuccessSettingResponse(response: SettingsResponse?) {
                response?.let {
                    it.cmd.forEachIndexed { index, item ->
                        if (item == "2007") {
                            stateLiveData.value = AudioModeStatus(it.status[index])
                        }
                    }
                    it.cmd.forEachIndexed { index, item ->
                        if (item == "2001") {
                            stateLiveData.value = RecordingStatus(it.status[index])
                        }
                    }
                }
            }
}

This is my fragment i am observing like this

rove2LiveVideoViewModel.apply {
            getR2CameraConnectedOrNot()
            observe(stateLiveData, ::onRoveR2CameraResponse)
        }



private fun onRoveR2CameraResponse(state: BaseViewModel.CameraR2Status) {
        when (state) {
            is BaseViewModel.CameraR2Status.AudioModeStatus -> {
                r2VideoControlWidget.showAudioStatusIcon(state.data)
            }
            is BaseViewModel.CameraR2Status.RecordingStatus -> {
                showLiveVideoWhenR2Connected()
                when (state.data) {
                    "1" -> {
                        r2VideoControlWidget.showPlayStopButton(true)
                    }
                    "0" -> r2VideoControlWidget.showPlayStopButton(false)
                }

            }
           
        }

    }

firs time when we call function i am getting call back in fragment onRoveR2CameraResponse method but when i call function again second i am getting call back in viewmodel from API but mutable live data not sending call back to fragment so that i can update view can any one help me in this what i am doing wrong do we need to create different live data for each method please suggest

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