Service Unavailable Web Page for multiple irules within a single VS

Sorry, missed off the additional 'Service Unavailable' irule which, when VS pool members are active this rule keeps uploading the b64decode image. Not sure why!!!

Service Unavail for possible multiple Service irules

when HTTP_REQUEST {

if {[active_members POOL-1] == 0 }{[HTTP::uri] contains /online/]}

HTTP::respond 200 context [b64decode [class element -value 0 “required web page image”]] "Content-Type" "mainpage" 

}