Thread:Project:Support desk/Tag extension output is being modified

Hello, I'm trying to make a tag extension to generate some custom output (calls to HighCharts). I'm passing the content back as an array with  as recommended here, but my ampersands aren't making it through without being encoded (I'm trying to send   but the page source gets   (with no underscore) which breaks the HighCharts rendering). Any tips on a workaround? I tried the technique in this example with no luck (I think maybe the core has changed a bit since 2007, or I'm doing it wrong).