Power graph in Quickapp not showing

[Nevicare 0]

I'm building my own Quickapp. 
To get the power graph available in the QA in use the command:
    self:addInterfaces({"power"})
 

To send the power value to the graph I use:
  self:updateProperty("power", tonumber(data.value))

This is working fine for a main QA. 
But for the QA-child the add interface is working (I see an empty graph), putting in the value doesn't work. No values are shown in the graph.

   self:updateProperty("value", tonumber(data.value))

   self:updateProperty("power", tonumber(data.vallue))

   self:updateProperty("log", data.update_timestamp)

The property update for "value" and "log" are shown in the ChildQA, but not the power value in the graph...
 

What could be the problem? Somebody any ideas...

 

[Joep 197]

For people that are not on the Dutch discord:

 

The child type was wrong. With the power meter type you get a graph. With the energy meter type you get total, today, week, etc. values.
You have com.fibaro.energyMeter and com.fibaro.powerMeter as types.