MAP-Designer and Data Table

Hi

on Map Designer in section Data Table, i want to view in a list only all device with the name device name - "Router"

if i add into the tablea0.html the entry

filter_name=@sub(Router) 

It doesnt work

i add also columns=".........,device&filter_name=@sub(Router)"

it doesnt work too.

Have anyone a clue to solve this challange ? Thanks Best Regards

---- start ----
<div class="maptablecontainer" style="overflow:hidden">
    <#lang key="html.mapobjects.tablea0.tabletitle" default="Alarms (@@@@)" var="tabletitle">
    <#table tableid="sensortable"
    id="<@objectid>"
    content="sensors"
    columns="sensor,status,downtimesince,group,device"
    sortby="group"
    infoheader="false"
    links="false"
    sortable="false"
    varexpand="tabletitle"
    tabletitle="@tabletitle"
    filter_tags="@tag(pingsensor)"
    filter_status="5"
    filter_status="13"
    filter_status="14"

    >
----- stop ----

designer error map-designer maps prtg