The value is not changed. in tampermonkey+javascript

https://www.upbit.com/exchange?code=CRIX.UPBIT.KRW-BTC

If you enter it as a keyboard in the order quantity, the value changes.

order quantity=주문수량

In the Chrome console,

document.querySelector(“#UpbitLayout > div:nth-child(4) > div > section.ty01 > div > div.rightB > article:nth-child(1) > span.orderB > div > dl > dd:nth-child(8) > input”).value = 1;

is not used.

What should I do to enter it?