collectd tail plugin

[James Wang]

My conf:

 <Plugin tail>

   <File "/tmp/test.csv">

     Instance "testcsv"

     Interval 6

     <Match>

       Regex "[0-9]+"

       DSType "CounterInc"

       Type "gauge"

       Instance "total"

     </Match>

   </File>

</Plugin>

Although, I can see collectd.tail.testcsv.gauge.total mextric on WaveFront, however, it had no value (all 0).

I keep doing (19 is just an example):

echo 19 >> /tmp/test.csv

Please shed some light

Thanks a lot in advance