Create ad using HTML5 Bundle Template with dynamic feed data

Is it possible to create a dynamic display ad that is using a HTML5 Bundle Template (ID: 419) that has dynamic properties based on a product feed?

I have researched Ad Customizers and how they are used to create a dynamic TextAd, but I don't seem to find the link between the Ad Customizers and the HTML5 bundle (e.g. created with Google Web Designer - based on a Dynamic Template).

I'm working in Ruby, but any explanation using SOAP will do. 

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