Using iMessage from command line/Terminal

Hello, I know that using:

osascript -e 'tell application "Messages" to send "Hello John!" to buddy "John Doe"'

Will send a message to my contact "John Doe"

I'm trying to do the same but only with the phone number itself instead of having to create a contact (e-commerce customers for example)

I tried different ways but was unable to do id correctly.

Regards