custom attributes on the location map

Hi,

Currently in my locantion balloon format I placed two placeholders: #_LOCATIONNAME and #_LOCATIONNEXTEVENTS. I want also display customs attributes but I don’t know how to do this (more specific I know how to creat/put custom attributes, but when I place one in the location balloon format, my locantion map display only “#_ATT{Value1}” text not the value itself). It would be very great if my map balloon be able to display something like that:

#_LOCATIONNAME
<p>Events:</p>
<p>#_LOCATIONNEXTEVENTS</p>
<p>#_ATT{Value1}, #_ATT{Value2}</p>

https://www.ads-software.com/extend/plugins/events-manager/