OpenSearch Plugin PARAMETER Not Showing Up

[svet-am]

I am building an OpenSearch plugin for a POST request server. Since I'm using a POST request, the OpenSearch specification says that I need to use PARAMETER tags for my FORM fields.

When FireFox imports the plugin, I look in %APPDATA%/Mozilla/Firefox/Profiles/<profile>/searchplugins and see the content that FireFox translated/imported. It is importing everything except the PARAMETERS. What am I doing wrong?

<?xml version="1.0" encoding="UTF-8"?>
<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
<ShortName>TSKB Advanced Search (all)</ShortName>
<Description>Search TSKB Using ALL Keywords</Description>
<InputEncoding>UTF-8</InputEncoding>
<Image width="16" height="16">data:image/x-icon;base64,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</Image>
<Url type="text/html" method="POST" template="<URI_FOR_SEARCH>">
<Parameter name="ctl00$m$g_91729750_4d08_47f6_9213_c93c4218c921$ASB_TQS_AndQ_tb" value="{searchTerms}" />
</Url>
<Url type="application/opensearchdescription+xml" rel="self" template="<URI_FOR_AUTO_UPDATE>" />
</OpenSearchDescription>