After activation you will have a new submenu under Plugins. Follow that to enable and set your attribute name.
Make sure you have an attribute terms with a number. ex: 1 Foot, 2 Feet, 4 Feet, ect
This is designed to work with the attribute term's slug and will multiply by that number.
You then need to add this attribute to your variable products along with it's terms, click use for variations and then you can avoid making variations for products that are sold in length, ect.
= 1.2 = - Better use of JSON object
- Initial Revision
= 1.0 = - Push to GitHub and Automatic
= 0.1 = - addded front end Js function to update the price as the variations are updated. No changes are made to the actual price and theme support may vary.