How to catch button-value?

Question

Flask

Hello everyone
, plz tell me how to catch butto-value using flask?
in html code like this:

...bla-bla..
<form action="script.name" method="post">
<input type="button" value="one" name="name">
<input type="submit" value="Send">

the value of button is changed by means of javascript.
when you try to catch the button via request.form['name'] flask swears and spits
If wider, then it's something like a counter that changes when you click

Thanks