return parms in http_url_post_xml

[dan klausing <danklausing@xxxxxxxxx>]

Could someone give an explanation of EXAMPLE 18 below. Particulary what do you have to do to return parms. It seems to define the subprocedure Incoming which loops thru and eventually picks up a a return parm. It also has a 2nd url: Do they do anything speacial in it that defines the return parm ? 


rc = http_url_post_xml(
                  'http://www.webservicex.net/CurrencyConvertor.asmx'
                         : %addr(SOAP) + 2
                         : %len(SOAP)
                         : *NULL
                         : %paddr(Incoming)
                         : %addr(rate)
                         : HTTP_TIMEOUT
                         : HTTP_USERAGENT
                         : 'text/xml'
                         : 'http://www.webserviceX.NET/ConversionRate');


      
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