Possibility of using a counter, for each interaction.
I would like there was the possibility of using the current counter for each interaction as a data variable.

For exemple using this data:
```
[{
		"id": 1,
		"first_name": "Rheta",
		"last_name": "Scanderet"
	},
	{
		"id": 2,
		"first_name": "Cale",
		"last_name": "Gyrgorwicx"
	},
	{
		"id": 3,
		"first_name": "Chas",
		"last_name": "Fabry"
	},
	{
		"id": 4,
		"first_name": "Genvieve",
		"last_name": "Brodeur"
}]
```

And I wanted to use this as **random** to populate this design:
![example](https://user-images.githubusercontent.com/855108/43205016-46c2c024-901a-11e8-91d4-fd904188d3fe.png)

Where the "**_#1_**" would be a counter (#1, #2, #3, and #4).
I can't use the ID, since is randomly populated, the numbers would not stay in sequence.
