Are there workarounds for STOMP numeric selectors?

[RubyStompUser]

As far as I can tell, it is impossible to use the JMS numerical selectors (<, >, 'BETWEEN', etc) via STOMP, probably because string values are not being converted to numeric values for the comparisons as they would in actual SQL.

Has anyone ever found a workaround for this? Some way for forcing a type cast or numerical interpretation of a STOMP header value in a subscription selector?

Many thanks for any help,
-Marc