Dealing with money in Grails

Hey,
Our domain classes use Double class to present money bids.
AFAIK, money values should be saved as BigDecimal right?
I can refactor the data type to BigDecimal (and update the database schema of course) but should I expect errors from views?
BTW, I'm using this tag to format money:
<g:formatNumber number="${equipementInstance?.cost}" type="currency" currencyCode="USD"/>
But no currency code is shown, neither delimiters.
Am I missing something?
OSX 10.6.2
Grails 1.1.1
Thanks for help and time.

As a quick test I just did the following:

And my output was: $12.23

So I'm not sure what's going on, on your side of things.

It is not working on Grails 1.1.1 but it does for Grails 1.2+

John Todd wrote:It is not working on Grails 1.1.1 but it does for Grails 1.2+

Time to upgrade. ;)