[Python] Dynamically change langsmith project (LANGCHAIN_PROJECT value)

I have a graph that I use in 2 places in my API. (note that the graph has many nodes and edges)

1. 
   as an independent graph exposed through /my-api1
   
   
2. 
   as a subgraph, exposed through /my-api2
   

problem is, when calling through my-api1 i want to log to LangSmith project1
and when calling through my-api2 I want to log to LangSmith project2.

i cannot apply @traceable decorator because the same methods/nodes are used in 2 places.

is there another way to invoke my graph and instructing it to write so a specific langsmith project?

os.environ["LANGCHAIN_PROJECT"] = appConfig.langchain_project covers point 1.


I read about RunTrees, but i couldn't pass the config object as a parameter.

https://github.com/langchain-ai/langgraph/discussions/2381

config = {
"run_id": request.thread_id,
"recursion_limit": 150,
"configurable": {
"thread_id": str(uuid.uuid4()),
"checkpoint_ns": ""
},
}

graph = graph_builder.get_graph()

rt = RunTree(
run_type="chain",
name="My Graph",
inputs=state,
project_name="project2"
)

# how to pass graph and config values and get the result?

rt.end(outputs=???)
rt.postRun()

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