I've read the article on assigning background images ('How to Create A Great Title Page', by Zikara). I have tried inputting the following code into the scripting of a page, as the article suggests: $PAGETEXT := $PAGETEXT + <body background='URL HERE'> (of course, replacing the 'URL here' with the URL for my desired image). I've also tried going directly into the source code and typing this: <body background="URL">.
However, neither of these options seems to work. The background is still just plain white, and I don't know what I'm doing wrong. I've done other page scripting before that has worked (such as for adding new text, or for changing the colour of text on a page), so I don't think I'm messing up something with the scripting. Does anyone know why this isn't working?