XML::Simple how to force hash generation for keys

Hi, I use XML::Simple to parse the following small XML file: <test> <firstElem> <anything id="1" value1="v11" value2="v12"/> </firstElem> <secondElem> <anything id="2" value1="v21" value2="v22"/> <anything id="3" value1="v31" value2="v32"/> </secondElem> </test> Perl-Scipt: