Pass argument into script when calling from CircleCI config yaml

Question

Like the title says; I am trying to pass an argument into the script when called from the circileci config YAML.

on the command line it would look like this

$ run_script_names.sh john

pretty simple stuff, in CircleCI I cannot get this to work as it keeps interpreting it as a command I have tried with quotes, without (single, double ) If I call just the script it works but I cannot pass anything into it.

command: | run_script_names.sh john

Please excuse YAML formatting in the example above

My question summarized is: how to pass args into a script called from circleCI