I want to access my lambda layer via Cloud9

I have developed some code on my local PC from which I created a lambda function which contains environment variables and a layer with my libraries. When I run the code it works. I have decided that I really should be developing this code using Cloud9 so I can debug it when I make more changes. I have been able to access my code OK via the AWS explorer but when I attempt to run it I notice that it falls over because it cannot locate a library. I realise it is not accessing the layer I uploaded, the error message is "ModuleNotFoundError: No module named 'tweepy'". So how do I access the existing Lambda layer I created, but this time in Cloud9?