Azureus, maximum heap size

% cat /usr/bin/azureus
#!/bin/sh
#JAVA='/usr/lib/jvm/java-6-openjdk/jre/bin/java -Xmx1024M'
JAVA='java -Xmx256M'
. /usr/share/java-config/libswt-3.4-java
if [ -z $VUZE ]; then
	UI=-Dforce.ui=az2
fi
exec $JAVA -Djava.library.path=/usr/lib/jni:/usr/lib \
	-classpath /usr/share/java/Azureus2.jar:$JARS \
	-Dazureus.install.path="$HOME/.azureus" \
	$UI \
	org.gudy.azureus2.ui.common.Main "$@"