asterisk users - Jan 2009 - agi and set variable ( accountcode in aserisk 1.4)

i am set var Set(CDR(accountcode)=forkcdr-test) into agiphp


probe
$agi->exec('Set(CDR(accountcode)=55555)');
$agi->exec('SetAccount','123123123');

and no work ...
how to solutions.

thanks people!!!!!
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