Lightweight read multiple values

I would like to read 20 custom application values into PRTG every 15 minutes, non critical, just baseline stuff. I was thinking "EXE script advanced" with a VBS script that reads a local XML file in a shared folder. Remote server would just upload new XML files to the probe server. Is this the most Lightweight solution possible?

http single value or creating my own snmp/perfmon, seems to much work.

<prtg>
  <result>
    <channel>Channel1</channel>
    <value>10</value>
  </result>
...
  <result>
    <channel>Channel20</channel>
    <value>20</value>
  </result>
</prtg>