Fixed value instead of getting from DB

[Eutanasio]

Hi!

In / admin / themes / default / template / controllers / products / quantity.tpl I would like to have a standard message for the products in case there is no stock, but don't know how to edit this line to just always say "On pre-order":

{include file="controllers/products/input_text_lang.tpl"
languages=$languages
input_value=$product->available_later
input_name='available_later'}

input_value has to be fix, but I've tried using quotations and so and doesn't work.

Thanks!