How to set a max quantity for out of stock

I can solve it like this:

You must have the woocommerce folder in your theme.

Access:
wp-content/themes/patricinhabijoux/woocommerce/global

Edit the quantity-input.php file

After the
defined (‘ABSPATH’) || exit;

put this code
global $product;

search for the line with the code.
max = “<? php echo esc_attr (0 <$ max_value? $ max_value: ”);?>”

And change to
max=”<?php echo esc_attr( $product->get_max_purchase_quantity()); ?>”

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