Graphics, Figures & Tables ⇒ exam gradetable bonusquestion points show as zero

[crum]

Hi. I am using the exam class. I have the following code:

Code: Select all

\documentclass[a4paper,addpoints,12pt,answers]{exam}
\usepackage[left=10mm,right=9mm,top=25mm,bottom=30mm]{geometry}

\begin{document}	

\begin{questions}

\question[2]When did it arrive?\boxedpoints
\begin{checkboxes}
	\correctchoice yesterday
	\choice today
	\choice tomorrow
	\end{checkboxes}


\bonusquestion[3]what is her  favourite colour?\boxedpoints\\
\begin{oneparcheckboxes}
	\choice green
	\choice yellow
	\correctchoice blue
	\choice red
	\choice orange
	\choice purple
\end{oneparcheckboxes}

\question[2]Name the smell of the yellow citrus.
\begin{checkboxes}
	\correctchoice orange
	\choice lemon
	\choice banana
\end{checkboxes}


\bonusquestion[3]True or false?
 Heat is warmer than cold. \boxedpoints\\
\begin{oneparcheckboxes}
	\correctchoice true
	\choice false
\end{oneparcheckboxes}

\question[2]Boxes are typically made of cardboard.
\begin{checkboxes}
	\correctchoice true
	\choice false
\end{checkboxes}


\bonusquestion[3]Winter is usually colder than summer. \boxedpoints

\begin{oneparcheckboxes}
	\correctchoice true
	\choice fales
\end{oneparcheckboxes}


\cellwidth{0.3cm}
\multirowgradetable{2}
\end{questions}
\end{document}

The Bonus Questions show as having 0 points.
What I want is for the bonus questions to show their points properly.