When I am trying to output an xml declaration line, I am getting error message "xml declaration line should be the first line"

This happens when I am working on Interwoven TeamSite

If I use "\" in the code, will it take away the meaning of xml declaration and print xml declaration literally ?

Following is the code that I am using. iw_ostream outputs a separate file. So first <?xml version="1.0" encoding="UTF-8"?> is output in one file, while <?xml version="1.0" encoding="UTF-8"?> under iw_ostream is output in dates.xml file. Its the second xml declaration line that causes problem.

I was advised to use <iw_perl>iwpt_output(qq(\<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n));</iw_perl>, but that did not help either. 
<?xml version="1.0" encoding="UTF-8"?> 
<iw_pt name="content"><iw_perl><![CDATA[ 
$xmlFileName = "xml/dates.xml"; 
$CDATA_open='<!'.'[CDATA['; 
$CDATA_close=']]'.'>'; 
]]> 
</iw_perl> 
<iw_ostream file_val="xmlFileName">  
<?xml version="1.0" encoding="UTF-8"?> 
<eventslist> 
<events> 
    <iw_iterate var='event1' list='dcr.event.EventContentContainer' it
+eration='count'> 
<event id="{iw_value name='event1.id'}"> 
        <active><iw_value name="$CDATA_open"/><iw_value name='event1.a
+ctive'/><iw_value name="$CDATA_close"/></active> 
        <eventdate><iw_value name="$CDATA_open"/><iw_value name='event
+1.eventDate'/><iw_value name="$CDATA_close"/></eventdate> 
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In reply to printing xml declaration by manishrathi

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