[TYPO3-formidable] access of values in class.tx_myextension_pi1.php

[Domi Garms]

Hello,

its me again. I dont understand, in the snippet:

http://formidable.typo3.ug/tutorials/ajax-with-the-sandbox.html

values from the main-extension php is called. I try to reproduce it
with following snippet, but its failed. my value var $test = "some
test" is empty in the output of my majix event.
                <sandbox>
			<userobj>
				<php><![CDATA[
					function getPersonId() {
						$sText = $this->oForm->oParent->test;	
						return $sText;
					}
				]]></php>
			</userobj>	
		</sandbox>

In tx_mytestextension_pi1.php:

var $test = "some test";

Do I missunderstood something?

Thanks for any help

Regards,
Domi