Attributes- selling different formats

I have products for sale and I need to break them up.
if you go here and click on Friends Forever then add to cart to purchase, it puts all three formats in the cart.
How do I give the buyer the choice of only one format.

http://frontporchromance.com

Found another post- sorry for the repeat

You have 3 Option Names with 1 Option Value each ...

What you want is 1 Option Name with 3 Option Values ...

You might also consider adding a 4th Option Value for:
Pick a format
Default YES
Sort Order 0
Display Only YES

so that the customer has to make their own choice and does not just pick the default ...

Ajeh:

You have 3 Option Names with 1 Option Value each ...

What you want is 1 Option Name with 3 Option Values ...

You might also consider adding a 4th Option Value for:
Pick a format
Default YES
Sort Order 0
Display Only YES

so that the customer has to make their own choice and does not just pick the default ...

WHere would I start with this to change? In the Option name?

Ajeh:

You have 3 Option Names with 1 Option Value each ...

What you want is 1 Option Name with 3 Option Values ...

You might also consider adding a 4th Option Value for:
Pick a format
Default YES
Sort Order 0
Display Only YES

so that the customer has to make their own choice and does not just pick the default ...

WHen I tried this. Now I have this coming up after I click on "Add to my shopping cart"
Please correct the following:
On the Option for: Friends Forever Mobi You picked an Invalid Selection: Mobi
On the Option for: Friends Forever ePub You picked an Invalid Selection: ePub
On the Option for: Friends Forever PDF You picked an Invalid Selection: PDF

First, go to your Attributes Controller and remove all Attributes for this Product ...

Next, go to the Option Name Manager and make an Option Name:
Option Name: Format Selection
Option Type: RadioButton

Now, go to Option Value Manager and make Option Values:
Option Name: Format Selection
Option Value: Please Select your format ...
Sort Order: 0

Option Name: Format Selection
Option Value: Mobi
Sort Order: 10

Option Name: Format Selection
Option Value: ePub
Sort Order: 20

Option Name: Format Selection
Option Value: PDF
Sort Order: 30

Then, go back to Attributes Controller for your Product and add these 4 Option Name/Option Values combinations with your Download filename ...

Now you should see on the Product Info page the 4 choices ...

Test them out and ensure they all work ...