Yes you need to give more info on it but looking at initial post I feel either of below 2 ways to do this:1) set metadata using fixed layout xsl2) Using sitePrecontroller: sample code may looks like below:String myMeta = "<META NAME='lang' content='en'>"; context.getPageScopeData().put(RuntimePage.PAGESCOPE_HEAD_INJECTION,myMeta);Note: it will be done globally for your entire site.Thanks.