AEM Cloud: Using a unique dispatcher ID for each dispatcher

In 6.5 it was possible to use the DISP_ID variable to show the unique dispatcher header for each dispatcher :

<IfModule mod_headers.c>
      Header always add X-Dispatcher ${DISP_ID}
</IfModule>

But this does not seem to work on Cloud as we get error on DISP_ID variable

Is there a way to do something similar on AEM Cloud dispatcher to identify each dispatcher with a unique Id?

Thanks,

Kashif