Return a number from a form

I have a form where I'm asking for a number to show up in the email back to me but nothing shows up. Here's the code from the form:
 
<tr>        <td class="form_field" valign='top' align='right'>Number of entries on this entry form: </td><td width='10'  aligh='right' valign='top'></td>        <td class="form_text"><input type="text" name="NumberOfEntries:"  value="<?php  print HtmlSpecialChars( $HTTP_POST_VARS[ "Number" ] ); ?>" class='text_box'>        </td>    </tr>   
 
In the email code this is what I have:
 
 ;$form_mail[] = array( "name" => "Number", "text" => "Number",  "type" => "text", "required" => "" ) ;
I tried changing the type to "number" but still nothing.
 
Any thoughs as to where we've gone wrong?
 
Thanks.

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