$ argunment

hello

i've current a problem with the $ argument in my redirect rule

 
 when HTTP_REQUEST {  
    set url1 -side1/- 
    set url2 -?$part=msg.404 
    if { [HTTP::uri] starts_with "-side" } { 
       HTTP::redirect "https://server1.com/$url1" 
    } 
    else { 
       HTTP::redirect "https://server1/$url2"  
    } 
 } 
 

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the problem is the $ argument is very important in my redirect url2

I think the rule does not work because the $ argument is an rule syntax

can any help