Clearing cookies for site with iRule

Hi, I've achieved a similar thing recently to delete APM cookies and restart session.  I can confirm the only way to delete cookies on client side is forcing them to expire. Try to see if my code snippet helps you. Also, I'm only removing cookies for specific domain since that was what I needed for my environment, use browser tools to determine whether you need this or not. 

when HTTP_REQUEST {
    set refererfound 0

    if {[string tolower [HTTP::header value Referer]] eq "<censored>"}{
        set refererfound 1
        HTTP::header replace Referer ""
        set reqcookies [HTTP::cookie names]
        foreach cookie $reqcookies {
            HTTP::cookie remove $cookie
        }
    }
}

when HTTP_RESPONSE_RELEASE { 
    if {$refererfound eq 1}{
    foreach acookie $reqcookies {
        HTTP::header insert Set-Cookie "$acookie=deleted; domain=<censored>; expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/"          
    }
    }
}