Hi Sergio,
There are two issues in table code.
First would be the path for items binding, it should be case sensitive "{namedModel>/endpoint}" according to your JSON model.
Second would be the cells binding, where you will have to mention the model name to properties as well.
<cells><Text text="{namedModel>ColName}" /><Input value="{namedModel>Col2}" /></cells>
Here is the sample: JS Bin - Collaborative JavaScript Debugging
Regards,
Sai Vellanki.