我正在尝试使用webomints 包希伯来语
以下是简单的文件：
% Preview source code
%% LyX 2.2.3 created this file. For more info, see http://www.lyx.org/.
%% Do not edit unless you really know what you are doing.
\documentclass[english,hebrew]{article}
\usepackage{fontspec}
\usepackage{fancyhdr}
\pagestyle{fancy}
\setlength{\parindent}{0bp}
\makeatletter
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Textclass specific LaTeX commands.
\usepackage{theorem}
\theorembodyfont{\upshape}
\newtheorem{theorem}{\R{משפט}}[section]
\AtBeginDocument{\make@lr\thetheorem}
% The following chunk fixes export with XeTeX.
% It is needed because polyglossia is used by default
% and \make@lr is only defined by babel.
\@ifundefined{make@lr}
{\def\make@lr#1{\begingroup
\toks@=\expandafter{#1}%
\edef\x{\endgroup
\def\noexpand#1{\noexpand\@number{\the\toks@}}}%
\x}}{\relax}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% User specified LaTeX commands.
\newfontfamily\hebrewfont[Script=Hebrew]{Ezra SIL}
\newfontfamily\hebrewfonttt[Script=Hebrew]{Miriam Mono CLM}
\newfontfamily\hebrewfontsf[Script=Hebrew]{Yehuda CLM}
\setlength{\columnseprule}{0.4pt}
\renewcommand{\labelenumi}{\alph{enumi}.}
\usepackage{pifont}
\newcommand{\wb}[2]{\fontsize{#1}{#2}\usefont{U}{webo}{xl}{n}}
\newcommand{\showb}[1]{\wb{20}{24}#1}
\makeatother
\usepackage{xunicode}
\usepackage{polyglossia}
\setdefaultlanguage{hebrew}
\setotherlanguage{english}
\begin{document}
יחלילחך
\usefont{U}{webo}{xl}{n}\char97
אבגדה
\end{document}
如果我删除最后一句希伯来语，它就可以起作用...
但是，如果不行，我得到的结果是：
我认为这是因为\usefont{U}{webo}{xl}{n}命令，我该如何修复它（恢复它）？
谢谢你！！