[Python] Writing to application insights from an azure python function app using opentelemetry

So I created a function app and logging works as expected, writing entries to application insights. But as I need custom dimensions I included opentelemetry. However I get no logging send to application insigths, and no errors. Any pointers?

function_app.py:

import datetime
import logging
import azure.functions as func
from azure.identity import DefaultAzureCredential,ManagedIdentityCredential
from azure.storage.blob import BlobClient, BlobServiceClient, ContainerClient
from azure.monitor.opentelemetry import configure_azure_monitor
from opentelemetry import trace

logger = logging.getLogger(__name__)

credential = DefaultAzureCredential()
configure_azure_monitor(
credential=credential,
)

tracer = trace.get_tracer(__name__)

app = func.FunctionApp()

@app.timer_trigger(schedule="0 0 10 * * *", arg_name="myTimer", run_on_startup=True, use_monitor=False)
def timer_trigger(myTimer: func.TimerRequest) -> None:

with tracer.start_as_current_span("hello with aad managed identity"):

logger.warning("Warning sent")

properties = {'custom_dimensions': {'key_1': 'value_1', 'key_2': 'value_2'}}
logging.warning('Warning with props', extra=properties)


local.settings.json:

{
"IsEncrypted": false,
"Values": {
"AzureWebJobsStorage": "",
"FUNCTIONS_WORKER_RUNTIME": "python",
"APPLICATIONINSIGHTS_CONNECTION_STRING":"InstrumentationKey=xx-xx-xx-xx-xx;IngestionEndpoint=https://westeurope-5.in.applicationinsights.azure.com/;LiveEndpoint=https://westeurope.livediagnostics.monitor.azure.com/;ApplicationId=xx-xx-xx-xx-xx"
}
}

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