Send Phone Message client.name in verification template message liquid syntax

Hi, I am trying to create a custom send phone message action but it seems the client.name field of the event is not available in the liquid syntax. My message for verification template is
“{{code}} is your verification code for {{client.name}}.” but when the SMS is sent i am only getting text “12345 is your verification code for .” How do I access the client name in the liquidsyntax?