How to use the overrides on the command line

[natea]

When I run the ./bin/aws start command, it mentions that one can now override parameters in the startup script with the -o or --overrides option, but the usage of this is not documented in the README.

Is this the correct syntax, if I want to override a ${svn_url} in my startup-script?

$ ./bin/aws start rhaptos-empty-32-dev -o svn_url=https://software.cnx.rice.edu/svn/devsets/express-edit-reuse/cnx

And then in my startup-script I have this line: