iRules for additional web page with same IP address as Exchange OWA.

I tried to create an iRule. I received this: error 01070151:3: Rule [/Common/RuleName] error: /Common/SSP-Rule:6: error: [command is not valid in the current scope][}]

when HTTP_REQUEST { if {[HTTP::uri] starts_with "/ssp"} { pool POOL_NAME } } }