Amazon feed fiel

I need an Amazon Variations listing created for (2) separate products. The file must be in a format acceptable by Amazon for upload. Needed ASAP. This should be an easy task for someone who had done this before successfully. Details: 1. There will be a new listing on Amazon. 2. It must have a selection of Type – X or Y, which is mandatory. X and Y are custom fields (not standard such as “Color” offered by Amazon). 3. Upon selection of either X or Y, product Sizes (also custom text field) should become clickable. 4. There are 11 sizes for Type X product and 9 for Type Y. 5. Picture URL’s, Description, Price, SKU#’s, etc. will be provided. Will also need explanation of how to create a parent listing on Amazon and have variations “attached” to it. Got plenty of more similar work if you can make this one.