Spring classpath variable not working

I'm trying to use classpath variable but I always get a FileNotFoundException.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://ift.tt/GArMu6"
    xmlns:xsi="http://ift.tt/ra1lAU" xmlns:p="http://ift.tt/1jdM0fE"
    xmlns:aop="http://ift.tt/OpNdV1" xmlns:tx="http://ift.tt/OGfeU2"
    xmlns:context="http://ift.tt/GArMu7"
    xmlns:mvc="http://ift.tt/1bHqwjR" xmlns:jpa="http://ift.tt/1iMF6wA"
    xsi:schemaLocation="http://ift.tt/GArMu6 http://ift.tt/1cMYE2s
       http://ift.tt/OpNdV1 http://ift.tt/1iMF6wJ
       http://ift.tt/OGfeU2 http://ift.tt/1dt4Cn6
       http://ift.tt/GArMu7 http://ift.tt/1dfrlFf
       http://ift.tt/1bHqwjR http://ift.tt/1cKeJ91
       http://ift.tt/1iMF6wA http://ift.tt/1jZdjKs">


    <tx:annotation-driven />
    <context:component-scan base-package="ar.com.conexia.salud.*" />

    <bean id="pdfGenerator" class="ar.com.conexia.generator.PdfGenerator">
<!--        <constructor-arg
            value="#{systemProperties['catalina.home']}/webapps/COMEI_Beneficiario/WEB-INF/classes/reports/" /> -->
        <constructor-arg value="classpath:/reports/" />
        <constructor-arg value="C://reports//" />
    </bean>

</beans>

As you can see, I tried using catalina.home variable as an alternative to check that I don't have any other problem with the file and it's fine.

Thanks.