Use of getfield in iRule

And one more problem .... for which I am just stumped:

The full iRule I have is thus:

when RULE_INIT { set static::maxRate 10 set static::timeout 1 } when HTTP_REQUEST { if { ([HTTP::uri] starts_with "/v3") } { log local0. "You are here: step 1"

    if { [HTTP::header exists Authorization] } {
    log local0. "You are here: step 2"
    set limiter [join [findstr [HTTP::header value Authorization] " " 1 end] ""]
        log local0. "You are here: step 3 =>  got auth token => $limiter"
        set methodCount [table key -count -subtable [IP::client_addr]:$limiter]
        log local0. "You are here: step 4 => Count = $methodCount /  $limiter"

} else {
        set limiter "[TCP::client_port]"
        log local0. "You are here: Step 5:  Limiter Set to: [TCP::client_port] for [IP::client_addr]"
        set methodCount [table key -count -subtable [IP::client_addr]:$limiter] 
        log local0. "You are here: step 6 => Count = $methodCount /  $limiter"
    }

        if { $methodCount < $static::maxRate } {
            incr methodCount 1
            log local0. "You are here: step 7 Adding entry for [IP::client_addr]"
            table incr -notouch  -subtable [IP::client_addr]:$limiter [clock clicks] "1" indef $static::timeout
   } else {
            log local0. "[IP::client_addr] with limiter $limiter blocked"
            HTTP::respond 429 content "Request blocked - Requests per second exceeded." Access-Control-Allow-Origin "*"
            return

    }
}

}

I get the following error in the logs and I for the life of me cannot figure out what is wrong:

- wrong args: should be "table incr -notouch -subtable 172.20.0.84:{f027f673812eb228d7b86a86601fc166-6f0a04ed3ef4722012ab8245f538abe8} 1480534505883002 1 indef 1 (extra args supplied)" while executing "table incr -notouch -subtable [IP::client_addr]:$limiter [clock clicks] "1" indef $static::timeout"

Help. Anyone !!! Please.

The goal of this irule is to rate limit on the IP::authtoken. If that fails then filter on the IP:remote_port

A client is allowed 120 HTTP requests per second. If I remove the "1" indef $static::timeout portion of the table incr command then it "works" , sort of. It will hit 120 connections and drop everything after the 120th connection, as it is not properly expiring the connection table.

The [clock clicks] "1" indef $static::timeout works in another irule so I am not sure what is wrong here.

I'd appreciate any help or assistance.

Thank you.