Considere o trecho de código fonte a seguir:
<sequence name="main">
<invoque name="Step1" partnerLink="Invoice" portType="inv:InvoiceInterface"
operation="GetTotals" inputVariable="RequestMsg" outputVariable="ResponseMsg"/>
<switch name="TotalCheck">
<case condition="getVariableData ('ResponseMsg',
'ResponseParameter', '/inv2:InvoiceResponseType/Total') > getVariableData ('input',
'payload', '/po:POType/TotalBilled')">
<throw xmlns="http://schemas.xmlss.com/..."/>
</case>
</switch>
…
</sequence>
Fonte: ANALISTA DE SISTEMAS - DESENVOLVEDOR / MPE/PB / 2015 / FCC