How to show the output value of a checkbox on the screen?

Question

I need to show in pdf the value of a checkbox but the output shows nothing about the value of the checkbox.

This is my html form

<form action="emitirCertificado.php?empresa&logo&nome&rg&funcao&nomeInstrutor&funcaoInstrutor&mte&data&autor&tabela&lista" method="GET">

This here is my dynamically generated code by js

<input type='checkbox' checked name='lista[]' class='lista' onclick='mudarValue()'><span class='listaContent'>${pessoa.nome}</span></td>

Until sending the data my code works normally but I cannot show the checkbox value(generated dynamically) in the PDF file.

I did some tests only in HTML page and I can see the value normally.

Can someone help me?