N1QL - Creating an index for nested elements

Couchbase Server
7

Hi All,
I’m interested too in this kind of indexing and modifying the GSI index.
We have millions of object like the following and querying on Signals and Samples is a common use case.

{
  "StartTime": "2014-06-25T03:22:28",
  "EndTime": "2014-06-25T04:53:26",
  "EventDetails": "blablabla",  
  "Signals": [{
    "StartTime": "2014-06-25T03:22:28",
    "Value": 123,
    "Samples": [
      {"SampleTime": "2014-06-25T03:22:27","Value": 0.0,"Offset": -1},
      {"SampleTime": "2014-06-25T03:22:28","Value": 0.0,"Offset": 0},
      {"SampleTime": "2014-06-25T03:22:29","Value": 0.0,"Offset": 1}
    ],
    "OtherPropsDetails": "blablabla"
  }],
  "OtherPropsDetails": "blablabla"
}

Thank you, Raoul