function error--confusing!

[hhpmusic]

Hi,
  I modified my def for Chinese font file selection, to define a function for 
bilingual display:
cheng = #(define-music-function (parser location chisize chinese engsize 
english)
  (number? string? number? string?)
  #{ \markup {
    \override #'(baseline-skip . 2) \center-align {
      \bold \fontsize #$chisize \override #'(font-name . "仿宋_GB2312") $chinese
      \bold \fontsize #$engsize $english } }
  #})
It seems right according the Notation Ref. But when I use it in the following 
header markups, it produces a lot of errors:
\header {
  dedication = \cheng #2 #"至武海雁" #2 #"Dedicated to Wu Haiyan"
  title = \cheng #4 #"乐诗三章" #4 #"Poem In Three Parts"
  composer = \cheng #3 #"胡海鹏" #3 #"Hu Haipeng"
  copyright = "© 1997, All Rights Reserved"
  tagline = \markup \fill-line { \override #'(font-name . "仿宋_GB2312") 
\fontsize #2 \bold "19998年月" }
}
The error messages are:
Processing `f:/my documents/composition/poem in three parts/threepoe.ly'
Parsing...
<string>:1:33: error: syntax error, unexpected \markup
parseStringResult = \notemode {  
                                 \markup {
<string>:3:6: error: unknown escaped string: `\bold'
      
      \bold \fontsize #lilyvartmpb \override #(quote (font-name . 
"浠垮甛x8b_GB2312")) \lilyvartmpc
<string>:3:12: error: unknown escaped string: `\fontsize'
      \bold 
            \fontsize #lilyvartmpb \override #(quote (font-name . 
"浠垮甛x8b_GB2312")) \lilyvartmpc
<string>:4:6: error: unknown escaped string: `\bold'
      
      \bold \fontsize #lilyvartmpd \lilyvartmpe } }
<string>:4:12: error: unknown escaped string: `\fontsize'
      \bold 
            \fontsize #lilyvartmpd \lilyvartmpe } }
<string>:1:33: error: syntax error, unexpected \markup
parseStringResult = \notemode {  
                                 \markup {
<string>:3:6: error: unknown escaped string: `\bold'
      
      \bold \fontsize #lilyvartmpb \override #(quote (font-name . 
"浠垮甛x8b_GB2312")) \lilyvartmpc
<string>:3:12: error: unknown escaped string: `\fontsize'
      \bold 
            \fontsize #lilyvartmpb \override #(quote (font-name . 
"浠垮甛x8b_GB2312")) \lilyvartmpc
<string>:4:6: error: unknown escaped string: `\bold'
      
      \bold \fontsize #lilyvartmpd \lilyvartmpe } }
<string>:4:12: error: unknown escaped string: `\fontsize'
      \bold 
            \fontsize #lilyvartmpd \lilyvartmpe } }
<string>:1:33: error: syntax error, unexpected \markup
parseStringResult = \notemode {  
                                 \markup {
<string>:3:6: error: unknown escaped string: `\bold'
      
      \bold \fontsize #lilyvartmpb \override #(quote (font-name . 
"浠垮甛x8b_GB2312")) \lilyvartmpc
<string>:3:12: error: unknown escaped string: `\fontsize'
      \bold 
            \fontsize #lilyvartmpb \override #(quote (font-name . 
"浠垮甛x8b_GB2312")) \lilyvartmpc
<string>:4:6: error: unknown escaped string: `\bold'
      
      \bold \fontsize #lilyvartmpd \lilyvartmpe } }
<string>:4:12: error: unknown escaped string: `\fontsize'
      \bold 
            \fontsize #lilyvartmpd \lilyvartmpe } }

I think it is perhaps because of "chisize", "chinese" are not things Lily know, 
and us the following:
cheng = #(define-music-function (parser location fontsize text)
  (number? string?)
  #{ \markup {
    \override #'(baseline-skip . 2) \center-align {
      \bold \fontsize #$fontsize \override #'(font-name . "仿宋_GB2312") $text
      \bold \fontsize #$fontsize $text
    } }
  #})
but the error still exists.
I'm not familiar with Scheme, so I can't find a way to debug and create a new 
function. Could anyone help me?
Haipeng
 
 
 

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