$_1 , what is it used for

[jobsonkjoseph]

Hi, In a very recent interview, i was asked whether i knew what "$_1" is? Anyone has an answer to it. Why we use $_1 and in what kind scenarios.

[rubenmarin · Accepted solution]

Hi, that represents the 'next' selection:
$ is Current selection
$1 Previous selection
$_1 Next selection
https://help.qlik.com/en-US/sense/June2018/Subsystems/Hub/Content/ChartFunctions/SetAnalysis/set-ana...