Infinity Plugin Timestamp from Dashboard Date/Time in request

Grafana Developers & API
1

I am trying to use the Date/Time from Dashboard as described @yesoreyeram here:
How to pass URL Dynamically in Grafana using Infinity Plugin - #6 by yesoreyeram.

For reference my request body here:

{
  "from" : "${__from}",
	"to" : "${__to}",
	"limit" : 100000,
	"bucketSize" : 3600000,
	"queries" : [
	{
		"signal" : "value.common.cu.sensors.supply.voltage",
		"aggregationFunction" : "raw",
		"groupBy": {
			"type" : "machine",
			"id" : "${Machine}"
			}
	}
	]
	
}

In the from and to fields I need the UNIX Timestamps in miliseconds. But this does not work. For the other variable named Machine it works very well.