Check if fox trusts player

Greetings and salutations! I am VERY new to MCreator and I wanted to ask, is there any way to check if a fox trusts a player (preferably through a procedure)?

For example when player right clicks a fox, if the fox trusts the player it sends a message "Hello!"

I know there is like custom code snippet but I am too inexperienced so I was hoping I'd find answers here
Thank you for reading and possibly replying!