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<?xml version="1.0" encoding="utf-8"?>
    <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/e
+nvelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="htt
+p://www.w3.org/2001/XMLSchema-instance">
...
            <multiRef id="id2" soapenc:root="0" soapenv:encodingStyle=
+"http://schemas.xmlsoap.org/soap/encoding/" xsi:type="xsd:int" xmlns:
+soapenc="http://schemas.xmlsoap.org/soap/encoding/">0</multiRef>
        </soapenv:Body>
    </soapenv:Envelope>

## USE THESE
use strict;
...
my $client = SOAP::Lite ->service($WSDL);
my $result = $client->initExportDevice($filter);
print Dumper($result);