Hi ! Thanks for the tips but I already tried it. The problem is that the macro is an embedded flash component (the one delivered with freemind-0.9-beta9) which do not react to the "force reload" shortcut. I must go through the preference of my browser to manually clear the cache. However, using the revision number in the macro should be a solution but force me to be careful of updating the macro call each time I update the mindmap (or when one of my collaborator update it). Implementing a solution in XWiki to make attachment max caching period to the time of the last update should be the first choice solution : transparent for everyone... a valuable proposal for XWiki 1.6 ;) ? You can look around the macro at the following address : http://globotraders-tahiti.com/xwiki/bin/view/Macros/Freemind and the code is : #macro(flashmap $mapname) <script type="text/javascript" src="$xwiki.getDocument('Macros.Freemind').getAttachmentURL('flashobject.js')"> </script> <div id="flashcontent_$mapname"> Flash plugin or Javascript are turned off. Activate both and reload to view the mindmap </div><script type="text/javascript"> var fo = new FlashObject("$xwiki.getDocument('Macros.Freemind').getAttachmentURL('visorFreemind.swf')", "visorFreeMind", "100%", "600", 6, "#9999ff"); fo.addParam("quality", "high"); fo.addParam("bgcolor", "#ffffff"); fo.addVariable("openUrl", "_blank"); fo.addVariable("initLoadFile", "http://globotraders-tahiti.com $doc.getAttachmentURL($mapname)"); fo.addVariable("startCollapsedToLevel","5"); fo.write("flashcontent_$mapname"); </script> #end Some tuning has to be done but it really rocks, you should think about add it to the next revision of XWiki. -- Hoani CROSS Globotraders Tahiti Founder [http://globotraders-tahiti.com] 2008/8/4 Ludovic Dubost &lt;ludovic(a)xwiki.org&gt;