In JSF page templates I use this code to include a CSS resource:\[code\]<hutputStylesheet library="css" name="mystyles.css" />\[/code\]The usual way to implement CSS cache busting would be to add a version parameter, like \[code\]v=123\[/code\], however this is not supported in outputStyleSheet:\[code\]<hutputStylesheet library="css" name="mystyles.css?v=123" />\[/code\]will cause a JSF1064 warning and the CSS will not be found.