"format" Expression Not Working

Just upgraded to Tinderbox 7.3.1 from 5.something and a lot of my formatting code stopped working. Digging deeper I find I can’t get the format expression to work - it just evaluates to “” (basically nothing). For example, format($Date,“L”) doesn’t evaluate to anything at all. Has the format expression been depreciated and replaced with something else?

If I have a note titled “Text”, and use this as the display expression: $Name+"–"+format($Date,“L”)

I get “Text–” as the name.

Any help would be appreciated. Thanks.

Works fine for me. Of course, the quotation marks must be straight quotes, not typographic (curly) quotes.