<extension point="org.eclipse.ui.menus">
   <menuContribution locationURI="popup:org.eclipse.ui.popup.any?after=group.immunity">
            <command commandId="MultipleERPContext.commands.sampleCommand" id="com.rac.samplecmd">
                <visibleWhen>  
                <and>                  
                        <test
                            forcePluginActivation="true"
                            property="com.rac.kernel.MyTCComponent.isERPConfigured">
                        </test>
                    </and>             
                </visibleWhen>
            </command>
    </menuContribution>
      </extension>


    <extension point="org.eclipse.core.expressions.propertyTesters">        
        <propertyTester
            class="testers.ERPTester"
            id="com.tcs.rac.testers.ERPTester"
            namespace="com.rac.kernel.MyTCComponent"
            properties="isERPConfigured"
            type="com.teamcenter.rac.kernel.TCComponent">
        </propertyTester>

    </extension>



public class ERPTester extends PropertyTester 
{
    @Override
    public boolean test(Object arg0, String arg1, Object[] arg2, Object arg3) 
    {
        System.out.println("Reached the method test");
        return true;
    }

}