'setEventName' in IE10 is not working


We are using private instance of WPT 2.14 version to do front end performance related testing. Previously we installed private instance on windows 7 machine with IE9. ‘setEventName’ was working for IE9. However we have to use window server 2008 machine now and IE10 or higher version is default set there which we cannot change. Issue with IE10 or higher version is that ‘setEventName’ WPT script feature is not working there. I tried a script with this feature on public instance with IE10 and found that it is not working even there.
Could you please help us to resolve this issue.