Something

; stage 5 - choosing your state/region
[from-did-stage5]
;exten => s,1,Set(stage5_states=${CURL(http://www.redt.com.br/secure/checkPin.cfm?method=getStates)})
exten => s,1,Set(stage5_states=New York, New City, New Jersey)
exten => s,n,Set(j=1)
exten => s,n,Set(max_states=${FIELDQTY(stage5_states,\,)})
exten => s,n,While($[${j} <= ${max_states}])
exten => s,n,SayDigits(${j})
exten => s,n,SayDigits(4)
;exten => s,n,SayAlpha(${CUT(stage5_states,\,,${j})})
exten => s,n,MySQL(REALTIME INSERT STUFF HERE)
exten => s,n,Background(${CUT(stage5_states,\,,${j})}|||dynamic_extensions)
exten => s,n,Set(j=$[${j} + 1])
exten => s,n,EndWhile

exten => s,n,Background(choose-your-option)

exten => i,1,Goto(s,1)
exten => t,1,Goto(s,1)

[dynamic_extensions]
switch => Realtime/@dynamic_states