Default Ruby in ~/.zprofile: command not found

[nicolaguidi]

I'm following the guide to set a specific Ruby version as default.
Following the instructions if I call the chruby command in the ~/.zprofile I get this error:
/Users/Myname/.zprofile:12: command not found: chruby.

I accomplished my goal calling chruby in the ~/.zshrc file, that makes me think it could be just a wrong instruction.

[postmodern]

I refined the wording a bit to mention that first you must load chruby.sh in your shell configuration, before adding the "chruby X.Y.Z" line.