Code Coverage on build in REST API

We use Teamcity and are very pleased with the product.

But we want to create a webpage with data from specific projects that will summarize the code coverage percentage on each of the projects.
I have tried to get the code coverage data (built-in dotCover in buildconfig) from the Rest API, but it is missing. Can you please add these data on the <build> element in REST API?

Alternatively, How can I gather code coverage from multiple projects on one webpage in another way? I'm all out of ideas.

thanks in advance

Martin Helgesen