This action is better done like shown at https://github.com/maxandersen/cheatsheet-helloworld/blob/master/cheatsheet.xml#L27

```xml
      <command
            required="false"
            serialization="org.jboss.tools.project.examples.cheatsheet.openFileInEditor(path=/${currentProject}/src/main/java/org/jboss/as/quickstarts/helloworld/HelloWorldServlet.java,fromLine=48,toLine=48)"/>
```
Notice the use of named parameters instead of `param3`