PlugExtraData_Get returning Null

[Kirby]

I am creating a new root device(type: eDeviceType_Thermostat.Root) and I want to place a named object in the device's PlugExtraData. When I call get_PlugExtraData_Get (see below) it returns a null.
This call works fine once the device is created and I'm checking to see if it a root device that contains the Thermostat Data. I have tried calling SaveEventsDevices() and getting a fresh device ref before making the call. Nothing seems to help. I am running the plugin remotely so that I can debug it.


PlugExtraData.clsPlugExtraData EDO = null;
EDO = dv.get_PlugExtraData_Get(null);
if (EDO != null) This is always null!
{
if (EDO.AddNamed("Thermostat Data", statData))
{
dv.set_PlugExtraData_Set(Util.hs, EDO);
Util.hs.SaveEventsDevices();
}
else
{
Util.Log("Error adding named data object to plug-in sample device!", Util.LogType.LOG_TYPE_ERROR);
}
}

Any help would be appreciated.

[Rick Tinker]

EDO = dv.get_PlugExtraData_Get(null);
dv.set_PlugExtraData_Set(Util.hs, EDO);

Note that when you did the _Get, you provided null for the hs reference, which means it is going to get the EDO from the device object currently in memory in your plug-in, so updates that you have made to the device are not going to show until you refresh (re-get) the device object. So provide your Util.hs object on the get, so that it always gets the latest version, and then always provide it on the _Set like you did here so that the changes you made are applied to the "real" device back in HomeSeer.

[Kirby]

Thanks, Rick.
I'm finally getting a handle on the hs vs null in the calls. I had actually tried it both ways.
The problem turned out to be that I was expecting that HomeSeer had instantiated the clsPlugExtraData object. After going back and examining the VB.NET example I saw that the plugin was instantiating the object. Once I did that everything started working.
The revised code became:

PlugExtraData.clsPlugExtraData EDO = new PlugExtraData.clsPlugExtraData();
if (EDO != null)
{
if (EDO.AddNamed("Thermostat Data", statData))
{
dv.set_PlugExtraData_Set(Util.hs, EDO);
}
else
{
Util.Log("Error adding named data object to plug-in device!", Util.LogType.LOG_TYPE_ERROR);
}
}
Util.hs.SaveEventsDevices();

[DNATechnologySolutions]

I'm having this same issue, but your fix did not make a difference. When I go to write the EDO back to the device it fails saying it is null.

[DNATechnologySolutions]

Solution found in http://forums.homeseer.com/showthread.php?t=173585 and after Tinkering

I Posted a More Detailed note on thread