Is there a way to format the items in the rollup field to look like this (including brackets on either side):

[“Choice1”,“Choice2”,“Choice3”,“Choice4”,“Choice5”]

I have this formula but it does not work in a rollup field:

' "' & 

SUBSTITUTE(

  Choices,

  ', ',

  '","'

) & 

'"]'

Then I found this sample code:

IF(

  ARRAYJOIN(values),

  "- " & ARRAYJOIN(values, "\n- ")

)

But I can’t figure out how to combine them without an error.

IF(

  ARRAYUNIQUE(values),

  'Q"' & ARRAYUNIQUE(values,   ', ',

  '",") & 

'"]'

)

All these “,”"’’ are making me go cross eyed. Please help me!