Multiple Test Suite execution with Ready Api Maven Plugin

Hi I would like to know how we can configure multiple testsuite execution with Ready API Maven plugin. I took an example from the http://readyapi.smartbear.com/features/integration/maven/reports

However, the configuration builds either the first test suite from the mutiple testsuite or if i remove the <testSuite> tag, the entire test suites in the project is built.

I am using the licnsed verision of ReadyAPI 1.5.

<testSuite>TestSuite_1</testSuite>

<testSuite>TestSuite_2</testSuite>

 Any suggestion?

Thanks in advance :smileywink: