<table:column> tag for property of referenced entity

I've got a two classes (pupil, class) and their scaffolded views.

pupil and class have a 1:1 relationship

In the list.jspx of pupil I'd like to display a column for a property of class.

I don't know the correct attributes to give to the table:column-tag.
This following example gives the error:

Quote:

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SpelEvaluationException: EL1027E:(pos 4): Indexing into type 'com.pupil' is not supported

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Code:

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<table:table data="${pupil}" duplicate="true" id="l_com_pupil" path="/admin/pupil" z="user-managed">
    <table:column id="c_com_pupil_pupilName" property="pupilName" z="user-managed"/>
    <!-- I'd like to display the attribute teacher_name of the class 'class' here but it doesn't work -->
    <table:column id="c_com_pupil_class_teacherName" property="teacherName"  z="user-managed"/>
</table:table>

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