ZailCZ on "Contact Form 7 - dynamic subject"

Hello,

I have 3 order possibilities in my web - "Car", "Ship", "Plane".

I want to dynamically fill the subject area based on which order customer selected.

I have subject field prepared like this:

[text subject placeholder "Your order"] and I want "Your order" be replaced dynamically based on which order customer selected.

How to do that?

https://wordpress.org/plugins/contact-form-7/