Using Craft environment variable for Asset source subfolder I have an environment variable "bucketUrl" that I would like to use as the subfolder path in my S3 bucket. However, Craft is not parsing the variable. When I upload an image, I see in my S3 bucket that a new subfolder "{bucketUrl}" was created with the uploaded image inside it. Why is Craft not parsing the environment variable? Craft is parsing my site url variable I am using elsewhere in the Craft admin, so I'm not sure why Craft is not parsing the bucket url variable.
From the docs, environment variables are currently only parsed in 3 places in the control panel. 


File System Path (in asset source settings)
URL (in asset source settings)
Site URL (in Settings → General)


So they won't work in the "subfolder" setting.  You can add a feature request if you think that should change.