Problem with drawing an arrow using Pstricks

Question

I'm trying to draw an arrow by using pstricks, but I cannot do that. The code is below:

\documentclass{book}‎
\usepackage{pstricks}‎‎
\begin{document}‎‎
\psline[linewidth=20pt]{<-}(2,1)‎‎‎
\end{document}‎
    ‎‎‎

What should I change with this code?

Answer 1

Run it with xelatex or alternetively with the sequence latex->dvips->ps2pdf. And then view it with the pdf and not the dvi