No subject

If I click "activate changes" in Asterisk-GUI the backslash is removed.
This breaks the function. 

exten = s,n,SIPAddHeader(Call-Info: sip:192.168.1.222 ; answer-after=0 )

I have tried a few things to overide this such as using as single and
double quotes.
If I put additional backslashes in, it removes one each time I click
"activate changes".
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Issue History 
Date Modified   Username       Field                    Change               
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07-31-07 13:55  qwell          Asterisk Version          => 1.4.9           
07-31-07 13:55  qwell          SVN Branch (only for SVN checkou => N/A          
  
07-31-07 13:55  qwell          Category                 Core/General =>
Core/Configuration
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