thanks for all support from the forum before hand.
i am having an issue with  my setup, i am trying to make the dispatcher dynamic by asigning a value from a variable, that variable is define on my dispatcher.lst but i am getting an error, if anyone can help thanks.

my config on the relay route
first i strip the prefix from my dial string, and set variable y with that code, then i strip it and dial it. but it does not work.
again thanks if anyone can helpme.



xlog(" anrtes de strip  >> el r-uri($ru)>($ru{s.substr,0,3})\n");


$var(x) = $ru;  #>> set varx as an string

$var(y)=$(var(x){s.substr,4,3}); #>>>>strip the first 3 digits to find my route



xlog("dsroute $var(y) my test ($ru)\n"); #check for variables loaded

strip(3); # strip the prefix to  route to destinatio

xlog("despues de strip time [$Tf] method ($rm) r-uri ($ru) 2nd via el code ($var(y)\n"); #check for loaded variables after strip


ds_select_dst("$var(y)", "4");#>>carrer dynamic don't  work variable is load propperly but  i get the following error

##Apr  8 17:59:32 ip-10-0-1-206 /usr/sbin/kamailio[8975]: ERROR: <script>: despues de strip time [Mon Apr  8 17:59:32 2013] method (ACK) r-uri (sip:54.236.192.19) 2nd via el code (54). >>> i see a the right code in the variable
##Apr  8 17:59:32 ip-10-0-1-206 /usr/sbin/kamailio[8975]: ERROR: <core> [sr_module.c:1726]: Could not convert PV to int  


#ds_select_dst("097", "4");#statically define works

xlog("print el destination y el $var(y) ($du)>>($td)>>> ($ru)\n");

       if (!t_relay_to_udp()) {

sl_reply_error();
};


        exit;
}



dispatcher.lst

#lineformat
#setit(integer)destination(sipuri)flags(integer,optional)


#Asterisks

007 sip:1.1.1.1:5060    ##route 1
024 sip:2.2.2.2:5060  ##route 2
100 sip:1.1.1.100:5060  ##route 100
103 sip:1.1.1.103:5060  ###route 103