Passing TEXT HIDDEN VALUES from FORM to EMAILS

Let’s say that I have 2 exact same forms (more later) to email 2 different persons, but because I’m “duplicating” the form because we show a picture of our face and a short word about us…

– FORM –
In the form it self I whant to hide a value (let’s say “Martin”) so it will be sending this hidden value to the email. So in the form it self I used
[hidden text send-to “Martin”]

– EMAILS –
My expectation is to get “Martin” ha the value of this hidden field and attach it to (per exemples):
Of the EMAIL #1
To => [send-to]@mydomain.com
Body => Hello, [send-to]

Of the EMAIL #2
Subject =¨> Thank you from [send-to]
Body => [send-to] have received your message and will answer ASAP!

– ISSUE –
With this code, the EMAIL #1 is not being outgoing (so I can’t read the body) and with EMAIL #2 I read “Thank you from [send-to]” but I would like to read “Thank you from Martin” at the Subject field and it’s the same for the Body part.

Can I have help please, I can’t figure het I did wrong and I’m reading the FAQ, The DOCS at https://contactform7.com/tag-syntax/

Thank to all of you that will guive me the solution

Signed [send-to] ??

The page I need help with: [log in to see the link]