How to set quantity to attributes

[insanity76]

Hi,

 

I wonder is there any contribution regarding how to set quantity for attibutes. For example, I have size S, M & L. I want to set the quantity for Size S only 5 pieces, Size M 10 pieces and Size L 4 pieces. So rather than set the total quantity on each product, I can set the quantity for each size, and example when Size S is sold out the customer only can choose other Sizes.

 

I really appreciate anyone who can help me. and im sorry if this topic ever discussed before, I couldnt find it anywhere, also will appreciate if someone can give me link to this topic

 

Thanks A lot

 

Eric