Mongo Aggregation: "return all documents where title does not begin with "ABC #"

help
1

I’m trying to figure out how to write an aggregation stage to remove documents that begin with a certain string but I’m having trouble wrapping my head around what to nest where.

I think I need $ne and maybe $substrCP (although there are a ton of string operators)

pseudo code:

const stageOne = { title: { $ne: { $substrCP: [ "ABC #", 0, 1, 2, 3, 4 ] } } };

// or... please help

Meteor.startup(function(){

  MyCollection.aggregate( [
                      { $match: stageOne },
                      { $out : "NewCollection" }
                  ]);