You are unable to attach a zip because this is a public forum, where you can only attach images. Zip files can be attached in support tickets only.
In order to show a tooltip, you must plug in a tooltip behavior
. As described in the help article, the data context in the tool tip template is data point. In order for you to reach the actual business item, you need to use the DataItem property, so you need to update your bindings similar to this:
You can also check out our tooltip sdk sample here
. Let us know how it goes.