JSONata array lookup using msg property

General
1

The trouble I have using JSONata once a year is that I can never work out the syntax required

image

msg.random contains number 0..2

How can I pick out the corresponding colour from the array?

Currently getting undefined

2

Try [1,2,3][$$.random]

3

Thank you
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I MUST TRY TO REMEMBER ABOUT $$. !!!!

4

I have taken to using $$ when referencing msg properties, as a fail safe to what ever scope the expression is in.