include "libdom.sol"

xml exo
 customer name = "A"
   "2356"
 /customer
 customer name = "B"
   "-25"
 /customer
/xml

print "Adding content of elements..."

dom x = dom()
x.build()

int sum

x.customer.at()                 ` points out first customer
text t

while x.found()
  t =  x.getData()             ` reads content, converts and add it
  sum + t.toInt()              ` converts and add it
let x.inc()                    ` next customer

print "sum of elements=", sum