Inventory is not working with variable/booking products

Hi there, I’ve been looking for any answer to my problem but can’t find anything related sorry.
I just want that someone help please.
Lets see, I have only 3 variable products created in my website, this products are “rooms” for reservations.
So I created 3 variables for each product and make it all of them variable in order that an shcedule time can be choosen by Easy Booking plugin.
This is working fine.
The problem is that I’ve been doing some test and If someone already made a reservation with a specific product (room) and specific date (variables) program does not show as is not available ( no stock ) as the inventary I set 1…so did I’m doing something wrong? missing something?

What I want is that if someone makes a reservation, then next user just in case there’s a coincende in dates , it should show “no stock” or something similar but this is not happening… Why?

Please, someone help. many thanks