Hi to everybody!
This question have been done before in other post but without answer. I´m trying to solve it now.
I´ve got a free product and I want to avoid the client going to paypal in this case. I can hide the payment buttons with the conditional fields, but unfortunately this doesn´t avoid the payment.

I´m trying to do it with a script in the head of "html layout" of the form:

<script type="text/javascript">
function calcular()
{
if(document.getElementById('productypes').value == 'freeproduct')
{document.getElementById('payment-type').value = 'offline';
}
}
</script>


In addition I hide all the payment related buttons with condtional fields and no {offline} information added to the email.
But something is wrong. Paypal continues.

I may be off base, but it seems the "wire transfer" built in payment option would work for this. Just change the name of the payment method and then add any info to the checkout page you like.