In the code below, despite using the `withpage` option, the dotted line and the page number are not showed up in the output pdf. How can I fix this problem? 

```
\documentclass{book}
\usepackage[colorlinks]{hyperref}
\usepackage[printonlyused,withpage]{acronym}
\usepackage{xepersian} % http://ctan.org/pkg/xepersian
\begin{document}
\chapter{تست}
\section{تست}
تست
\ac{GSM} 
\section{نمادها}
\begin{acronym}
\acro{GSM}[$G_sm$]{مجموعه فلان}
\end{acronym}
\end{document}

```

Please note that the code should be run using `xelatex`.