Thanks, this is known so far. I have not yet found out how this can be fixed quickly. Something like an own tag parser is the rough idea, but unfortunately I do not have the time right now this year. On the other hand mixing markup and code is not a good idea. Try to change the page template or add a page_part that only deals with code. I know this is only a workaround.

hmm the radiant people added a feature that makes their plugin recognize all radius tags...
perhaps a reverse engeneering of this method could lead to a fast solution...
somehow we need to ignore everything that is between the <? and ?> tags... If you have an idea how to do this I will help you investigate and develop a fix with you..