no ip script is not updating

hello everyone. i am using a mikrotik 750 in bridge mode, where the mikrotik has the pppoe credentials.
i am using the script from http://wiki.mikrotik.com/wiki/Dynamic_DNS_Update_Script_for_No-IP_DNS to update the no ip domain. although the scripts it runs, it does not update.
as a test i am using a linux box in my lan to see if it can update the domain and it works correctly. the version of the software in mikrotik is 6.10

you can use the cloud option on 6.15

sorry what is the cloud option?

http://wiki.mikrotik.com/wiki/Manual:IP/Cloud

I’ve this script running:

Set needed variables

:local username “xxxx”
:local password “yyyy”
:local hostname “zzzz.noip.me

:global dyndnsForce
:global previousIP

print some debug info

#:log info (“pppoe2 - dyndns-update: username = $username”)
#:log info (“pppoe2 - dyndns-update: password = $password”)
#:log info (“pppoe2 - dyndns-update: hostname = $hostname”)
#:log info (“pppoe2 - dyndns-update: previousIP = $previousIP”)

#get ip address from interface
#:global ddnsip [/ip address get [/ip address find interface=pppoe-out2] address]
#:global ip [ :pick $ddnsip 0 [ :find $ddnsip “/” ] ]
#:log info $ip

get the current IP address from the internet (in case of double-nat)

#/tool fetch mode=http address=“checkip.dyndns.org” src-path=“/” dst-path=“/dyndns.checkip.html”
#:local result [/file get dyndns.checkip.html contents]
:global ddnsip [/ip address get [/ip address find interface=pppoe-out2] address]
:global currentIP [ :pick $ddnsip 0 [ :find $ddnsip “/” ] ]
#:log info $currentIP

parse the current IP result

#:local resultLen [:len $result]
#:local startLoc [:find $result ": " -1]
#:set startLoc ($startLoc + 2)
#:local endLoc [:find $result “” -1]
#:local currentIP [:pick $result $startLoc $endLoc]
#:log info “dyndns-update: currentIP = $currentIP”

Determine if dyndns update is needed

more dyndns updater request details available at http://www.dyndns.com/developers/specs/syntax.html

:if (($currentIP != $previousIP) || ($dyndnsForce = true)) do={
:set dyndnsForce false
:set previousIP $currentIP
/tool fetch user=$username password=$password mode=http address=“dynupdate.no-ip.com” src-path=“/nic/update?hostname=$hostname&myip=$currentIP” dst-path=“/dyndns.txt”
:local result [/file get dyndns.txt contents]
:log info (“pppoe2 - dyndns-update: Dyndns update needed”)
:log info ("pppoe2 - dyndns-update: Dyndns Update Result: ".$result)
:put ("Dyndns Update Result: ".$result)
} else={
:log info (“pppoe2 - dyndns-update: No dyndns update needed”)
}