Sightly variables scope

Hi all,

I used to have a jsp file for global variables. Is there an equivalent in sightly?

Suppose I have

public class AbstractModel{

    @PostConstruct

     public void init(){

         // -- initiate all base variables

     }

     public String getModelName()

     {

           return AbstractModel.class.getName();

     }

}

public class AbstractPage extends AbstractModel{

    @PostConstruct

     public void init()

     {

      // more vars here for page templates

     }

}

public class NewsLandingPage extends AbstractPage{

    // blah blah

}

public class NewsComponent extends AbstractModel{

    // blah blah

}

HTL templates

global.html 

<sly data-sly-use.abm="my.site.AbstractModel"/>

<sly data-sly-use.abPage="my.site.pages.AbstractPage"/>

<!--/* other customized global variables */-->

<!-- global info: ${abm.modelName }-->

for newslanding

newslanding.html

<sly data-sly-include="global.html"/>

<!-- newslanding info: ${abm.modelName} -->

Output:

<!-- global info: my.site.AbstractModel -->

<!-- newslanding info: -->

I would expect both to return the same name, but the landing page fails. How can I extend the global visibility to other files? 

Thank you very much!

-kt