Create Custom map sortby down,warning, unusal

Hi there

I created a custom map from tableA0. I want to have a sort priority 1. Down 2. Warning 3. Unusal

Is it possible to define the sortby this way?

This is what I have so far

<!--Data Tables: Custom Alarms-->

<div class="map_object map_table" id="<@itemid>" objectid="<@objectid>" subid="<@subid>" style="overflow:auto;<#mapobject type="coordinates" subid="<@subid>" mode="<@editmode>">">
  <#mapobject type="objectgrip" mode="<@editmode>">
  <#mapobject type="htmlbefore" subid="<@subid>">
  <#checkobjecttype objecttype="probenode,group,device" nicemessage="true" id="<@objectid>">

  <div class="maptablecontainer" style="overflow:hidden">
    <#lang key="html.mapobjects.tablea0.tabletitle" default="Alarms (@@@@)" var="tabletitle">
    <#table tableid="sensortable"
    id="<@objectid>"
    content="sensors"
    columns="downtimesince,sensor,status,lastvalue,message"
    sortby="downtimesince"
    infoheader="false"
    links="false"
    sortable="false"
    varexpand="tabletitle"
    tabletitle="@tabletitle"
    filter_tags="@tag(<@tagfilterstring>)"
    filter_status="5"
    filter_status="4"
    filter_status="10"
    >
  </div>
  <#mapobject type="htmlafter" subid="<@subid>">
</div>

custom-map prtg sensors sortby