OpenDNS Update script help

Sorry for cross posting. I figured ths would go better here.

Im trying to run this as a scheduler task to check if the IP changes and update the OpenDNS information. The only problem is in the fetch part. It doesnt like the ampersands. How do I escape this out so it works? Or if someone has a better script to do the job, that would be excellent. Im on my way to having over 100 RB450s/RB433s in production and Im almost ready to just tie them all to a single dns server, but would much rather have unique filtering for each site.

Script follows:

:local user someuser
:local password somepass

:local host somehost

/tool fetch host=myip.dnsomatic.com address=myip.dnsomatic.com src-path=index.html dst-path=myip
:delay 2
:global newip
:global myip
:set newip [/file get myip contents]
:if ($newip != $myip) do={
:set myip $newip
/tool fetch url=“http://updates.dnsomatic.com/nic/update?hostname=$host&myip=$myip&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG” user=$user password=$password dst-path=update
:delay 2
:log info [/file get update contents]
/file remove update
}
:delay 2
/file remove myip