This feature enables support for the Expression Language (EL) 3.0.
To enable the Expression Language 3.0 feature, add the following element declaration inside the featureManager element in your server.xml file:
<feature>el-3.0</feature>
If you are developing a feature that depends on the Expression Language 3.0 feature, include the following item in the Subsystem-Content header in the feature manifest file for your new feature:
com.ibm.websphere.appserver.el-3.0; type="osgi.subsystem.feature"