Fault : Java heap space

Hi, I keep encountering a Java heap space error when I'm testing my mashup service. I tried restarting my server to clean the heap and start with a fresh new one without sucess. The problem seems to be with that function that I call around 200 time :


function addDescription (product) {
var productURL = product.url.toString();
var config =
<config>
<var-def name = "productURL">
{productURL}
</var-def>
<var-def name = "productDescription">
<xslt>
<xml>
<html-to-xml>
<http url="${productURL}" />
</html-to-xml>
</xml>
<stylesheet>
<file path="productInfo.xsl" />
</stylesheet>
</xslt>
</var-def>
</config>

var productScraper = new Scraper(config);
var itemDescription = new XML(productScraper.productDescription.substring(productScraper.productDescription.indexOf("?>") + 2));

product.appendChild(itemDescription.description);
product.appendChild(itemDescription.id);

return void(0);
}

I tried increasing the heap size to 512 MB but the Java process (the server is running on windows) is still consuming only around 160 MB. I modified my .vmoptions like this :


-Xms512m
-Xmx512m
-XX:PermSize=128m
-XX:MaxPermSize=128m


I don't know what to do from there, I keep getting the same Java heap space error.

Thanks in advance.