Quick Variables Question

So I've read this page concerning Variables..
http://www.perceptiveautomation.com/ind ... Intro.html

But what I don't understand is how to link a Variable I've created, say iTunes Volume, to the actual volume of iTunes.

I guess in my mind, these variables would auto update based on a device state, but I just don't see how to link a variable to a particular device, or it's state..

Clearly, I'm missing something.

The rest, I think will be easy!

[jay (support)]

In general, you can use device states in the same places you can use variables so most of the time it's not necessary. If you want to do it though, create a trigger that watches the device state and any time it changes use the Variable Actions->Insert Device State into Variable action to update the variable.

Yup.

After I posted I realized that the Variables is mostly likely designed to see all the minutia of devices in one place.. Doesn't make sense to update a variable from a device, when most of the time the status of a device itself could be used as a trigger anyway.

Still I can see how this could be useful for trouble shooting issues and problems, not to mention seeing all this available info in the iOS app..

Thanks for the info.

JT