Environment is also not defined in URL parameters. It is defined in Specification URL though.
Was able to work around by using custom auth to define a variable, setting the value with the environment variable, and then using that variable in the header.
I'm trying to do the same thing. I've tried using custom auth like you did to define a variable. However, entering the variable name in the header doesn't actually give me the value of the variable...
pls retool help
Hello @henrymeiklejohn and @ineedopenapihelp,
Great catch. Let me surface this to our engineer team and see if they can fix this.
Are there any issues with using Custom Auth for the work around you showed?
Obviously we would like to not force users to have to use Custom Auth every time they need to use a variable 
Very relevant username @ineedopenapihelp.
@Jack_T no issues with the workaround.
