Passing parent layout's object to nested page

[g kuczera]

Hi Guys,
I have a custom layout named LayoutM (java class and tml). It is used by my
page - Activities - like that:

<t:layoutM title="${message:site.title} - ${message:page.title}"
           bodyClass="dashboard"
           xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd";
           xmlns:p="tapestry:parameter">
<!--a lot of stuff -->
</t:layoutM>

And it implements some kind of interface (class LayoutM implements
CustomInterface).
Is there a way to pass LayoutM java class object,+
 to Activities page? Activities page contains the field:
  @Parameter(required=false)
  private CustomInterface fieldName;

I saw
http://apache-tapestry-mailing-list-archives.1045711.n5.nabble.com/T5-passing-values-between-layout-component-and-page-td2412095.html

but this works in the opposite way.

Is something like that correct (if I put it below "a lot of stuff" line)?

  <p:fieldName value=${this}></p:fieldName>

What I can see right now is the "this" being an instance of Activities
class. How can I get the parent layout's object?