Mine

<mule-descriptor name="GroovyUMO"    inboundEndpoint="jms://groovy.queue"    implementation="org.mule.components.script.jsr223.ScriptComponent">    <properties>        <property name="scriptEngineName" value="groovy"/>        <text-property name="scriptText">             def command = """executable arg1 arg2 arg3"""             command.execute()        </text-property>    </properties></mule-descriptor>