How should this work: Label IN (${Locator${0}}) ?

[Rita Zweers]

Please excuse this basic question, I started learning and just can't find a example. 

The documentation is not very clear to me. Additionally I found a Bug Report on this, so I am not sure. 

If you are mapping multiple references from the data, enter Label IN (${Locator${0}}) where Locator is replaced by the name of the Locator.

I was trying to use this so I know what it actually means and how it functions, but nothing happens. Can someone please explain or simply provide a Screenshot on how it should look like? (I am more of a visual person).

I am using this "Label = ${Locator}" so far and it is clear to me, but thought I could 'upgrade' or make use of the other one, too.

Additionally I found this Bug report: [JSDCLOUD-10987] Using placeholder to extract specific value in data locator list in Insight import IQL does not always work - Create and track feature requests for Atlassian products.

[Rita Zweers]

Are those placeholders that will come into play when using JSM?
(We started with Assets)

Advanced: Placeholders | Jira Service Management Data Center 5.13 | Atlassian Documentation