Can't use non-numeric string as operand of "&&" in rule

Hello, Now, it works correctly, but the elseif and else, returns to give the error "can not use non-numeric string as operand of" && "Definitely, how it could be better?

when CLIENT_ACCEPTED {
    set collecting 0
    set renegtried 0
    set default_pool [LB::server pool]
} 
 when HTTP_REQUEST {
        set uri [string tolower [HTTP::uri] ]
        /_hst name and ?_hst=1 parameter triggers client cert renegotiation
        switch [HTTP::uri] {
            "/extern/test.jsp" -
            "/SO/services/dat" -
            "/Ex/services/pay" {
     if { !$renegtried && [SSL::cert count] == 0 } {    
        log local0. "[IP::client_addr]:[TCP::client_port]: A log entry"
            Collecting means buffering the request. The collection goes on
            until SSL::renegotiate occurs, which happens after the HTTP
            request has been received. The maximum data buffered by collect
            is 1-4 MB.
            HTTP::collect
            set collecting 1
            SSL::cert mode request
            SSL::renegotiate
            pool FIRST_POOL_SSL
            SSL::enable serverside
            log local0. "WITH FIRST POOL"
            return
            }
           }
            } 
           if { $uri equals "/extern/test.jsp" } { 
            pool FIRST_POOL_SSL
            SSL::enable serverside
            log local0. "WITH FIRST POOL"
          } elseif { ([string tolower [HTTP::host]] eq "www.test.es") && ($uri eq "/abc") }{
            HTTP::redirect "https://www.test.es/test1/"
          } elseif { ([string tolower [HTTP::host]] eq "www.test.es") && ($uri contains "/") && ($uri) }{
            HTTP::redirect "https://www.test.es[HTTP::uri]"
           } else { 
            pool $default_pool
                SSL::disable serverside
            log local0. "WITH SECOND POOL"
        } 
    }