Trying to connect elastic agent using kotlin (native android) with flutter using channel and send spans manually

I am trying to connect elastic from flutter to native android using kotlin and log API by sending spans as this example

what is the best way to send spans manually from android native code
~~~bash
private fun sendSpan(endPoint: String, request: String, header: String){
val tracer = GlobalOpenTelemetry.getTracer(instrumentationScopeName)
val span = tracer.spanBuilder(endPoint).startSpan()
span.end()
GlobalOpenTelemetry.get().logsBridge[endPoint.split("/").last()].let {
it.logRecordBuilder().let { logRecord->
logRecord.setBody("REQUEST_HEADER: $header\n\nREQUEST: $request")
logRecord.emit()
}
}
}
~~~