Check balance in asterisk

;; Check Balance
;[MySQL]
exten => 555,1,Answer()
exten => 555,2,agi(googletts.agi,"Veuillez saisir votre numéro !",fr)
exten => 555,3,Read(number,,4)
exten => 555,4,agi(googletts.agi,"s'il vous plait entrez votre mot de passe!",fr)
exten => 555,5,Read(password,,4)
exten => 555,6,Set(solde=${CURL(http://localhost/check_balance.php?number=${number}&password=${password})})
exten => 555,7,agi(googletts.agi,"votre solde est ${solde} dirham",fr)
exten => 555,n,Hangup()