Attribute - Stock Adjustment - Help?

[lastlokean]

Sorry if this is obvious or been answered before, I have looked I just can't seem to find any information on the subject.

I have products set up with attributes.
One of my products is a liquid and sold by the mL.

I have a size attribute made, for 100mL, 200mL etc. They get 1 bottle, just of a different size.
I have the larger option offset price +10.00 and all that is working no problem. Thing is I want to add in that if they select the 200 mL option it reduces my inventories stock by 2 instead of by 1.

Is there any way to do this?

[kobra]

Get the "stock by attributes" plugin

[lastlokean]

Will that work with zencart 1.5? It seams to say only 1.3.7

[kobra]

http://www.zen-cart.com/downloads.php?do=file&id=202

[lastlokean]

Yes I saw that, thank you very much.

I am just concerned about the part where it says:

"Zen Cart® Versions v1.3.9"

And I am running Zen Cart v1.5.0

[kobra]

I do not believe that there are any files in it that were changed in 1.5.0

[lastlokean]

Thanks much for being awesome!