Analytics Builder Output Measurement Timestamp Mismatch

Forum
1

Hi everyone,

I’m working on a simple flow in Analytics Builder where:

  • I take an input measurement (e.g., from type Demo),

  • Fetch a value from the Managed Object (e.g., updated_cost.0.cost),

  • Multiply the two values using an Expression block,

  • And write the result as a new Measurement in a custom fragment (Cost.Total).

It’s working functionally — however, I noticed that the timestamp of the calculated output measurement doesn’t match the timestamp of the original input measurement.

Input Measurement:

{
  "id": "1417835717",
  "type": "Demo",
  "time": "2025-08-29T08:40:10.000Z",
  "Demo": {
    "TOTAL_WithDraw": {
      "unit": "gal",
      "value": 0
    },
    "VOLUME_dispensed_15": {
      "unit": "gal",
      "value": 0
    }
  }
}

Calculated Measurement Output:

{
  "time": "2025-08-29T08:40:51.000Z",
  "apama_analytics_modelName": "Demo Total Cost #1",
  "Cost": {
    "Total": {
      "unit": "$",
      "value": 0.36
    }
  }
}

As you can see, the output measurement timestamp (08:40:51) does not match the input measurement timestamp (08:40:10).
For my use case, I need the calculated measurement to carry the same timestamp as the original input measurement.

Question:

How can I ensure that the output measurement generated by Analytics Builder uses the same timestamp as the input measurement? Is there a configuration or workaround for this?

image
image848×400 4.43 KB

Thanks in advance!

2

I have tried with different device type as well but still having same issues

3

Hi Vikas,

Yes, the CreateMeasurement block allows you to set the timestamp of the measurement using the Time input port. If this port isn’t connected, the block defaults to using the current model time.

For more details, please refer to the official documentation here:

A simple sample block is here for your reference.

ABModel
ABModel944×414 8.48 KB

Thanks,
Sudha Jallu.

4

@Sudha_Jallu Thanks for reference, its working now