Here is how I did it. I used loadjob to call a specific report and then piped it to a search command that includes tokens
|loadjob savedsearch="admin:search:Table of Clipping and Signal to Noise Ratio activity By UserName" | search UserName=$UserName$
Here is what it looks like in XML Look up loadjob for more info.
<panel>
<input type="text" token="UserName" searchWhenChanged="true">
<label>UserName</label>
<suffix>*</suffix>
<default>*</default>
</input>
<table>
<title>Table of Clipping and Signal to Noise Ratio activity By Group</title>
<search>
<query>|loadjob savedsearch="admin:search:Table of Clipping and Signal to Noise Ratio activity By UserName" | search UserName=$UserName$</query>
<earliest>$earliest$</earliest>
<latest>$latest$</latest>
</search>
<option name="count">10</option>
<option name="drilldown">none</option>
<option name="refresh.display">progressbar</option>
</table>
</panel>
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