FormMail problems

Hi!

I have a problem with the submit link / submit button for a new website (my thankyou page).

I have created the following form mail via my domain. form is formmail.pl











When I try to update it either I get a message that the link is broken or that it is not a thankyou.html page in my server. I've got everything else right.
And when I try to fix this with
then pile it, I see no contanct page and go straight to thankyou.html when I click on contanc page button.

Can you help me with that, when I have finished in written form at contact page and press submit/send and I like to get on my own ThankYou page ut. How can I get it?

Thanks for your help

Rtying again

How can I link my contactus page to a self made thankyou page after the form is submited/sended?