Help with iRule to mask/hide User Personal Information in HTTP Response

Got it solved with below iRule code -:

when HTTP_RESPONSE {
    set clen [HTTP::header Content-Length]
    HTTP::collect $clen
}

when HTTP_RESPONSE_DATA {

    regsub -all {<PhoneNumber>(.*?)</PhoneNumber>} [HTTP::payload] {<PhoneNumber>********</PhoneNumber>} fixeddata
    log "Replacing payload with new data."
    HTTP::payload replace 0 $clen $fixeddata
    HTTP::release

}