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XPath and BPEL

 
Alexandru Gifei
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Java Linux Postgres Database
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Hello,
I am building a calculator service using Eclipse & BPEL designer with Apache ODE and this is where i got stuck:

If i use concat instead of sum, there is no compilation error. But i need to make the sum of the variables. I have checked the documentation for this function and the signature is: fn:sum(arg,arg,...). What could be wrong here?

Alexandru
 
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