Use a tuned model from Vertex AI Studio via firebase_vertexai in flutter app

[piacademy-au]

I've tuned a foundation model and deployed it to an endpoint. I would like to use that model in flutter app using firebase_vertexai package. I tried initialising the model as follows,

_generativeModel = FirebaseVertexAI.instance.generativeModel(
model: 'projects/PROJECT_ID/locations/asia-southeast1/endpoints/ENDPOINT_ID',
);

I get an error when I start to chat with this model. It says 'Bad Request'.

I've searched the web as well as I could, yet unable to find a solution. Could anyone help me on how to go about this?