Hey Adriavidal,
Try using:
$output = get_field('precio');
get_field will return the field value, where as the_field will echo it.
It would be great to be able to choose formatting of the number field (thousands separator, decimal places) both for the backend and the frontend.
Backend especially, since that’s hard to manipulate with PHP. It could be treated as a ‘Append’/Prepend’ option.
