I think you can make that work @zekelion, but it is a little bit tricky because my flow rates are custom attributes. It will be a lot easier when this is added, assuming it gets the full Rule Machine treatment that other built-in attributes and device types have: Capability Request - Water Flow Rate
For now, in the Rule Machine actions, you have to first set the custom attribute to a variable and then compare that variable to the numbers that you are interested in. Here's a quick demonstration:
The trigger event type to select at "Select capability for new Trigger Event" is "Custom Attribute".
The variable type is 'decimal', and setting it looks like this:
