Possible to use a field value as a resource key?

[brossow]

Not sure the subject describes exactly what I'm after, but I hope it's close.  Short version is that we want to do some complex calculations that ultimately return a string like 'resource.key.1' that we could in turn use to return the value of a key from a properties file.  In other words, we'd like to turn this:

$F{resourcekeyfield}  (with a value like 'resource.key.1')

into this expression:

$R{resource.key.1}

I tried several things (such as $R{$F{resourcekeyfield}} for example) but of course nothing worked.  Any suggestions are more than appreciated!  Thanks in advance.