Quantity per characteristics

Hi,

I'm setting up a webshop and until now it works fine, but I still got 1 hing to be cleared.
The meaning of the website is to sell clothing and I wondered if it's possible to add an amount per characteristic.
An example :
I sell shirts and I have only 10 items on stock, but I have the same shirt in several sizes. Is it possible to add an quantity for each size ? For instance I have 2 pieces of size S, L, M, XL and XXL and there are already 2 pieces of size L sold. The third one can still select L, although I don't have them anymore. Is there a solution for this ?