Case insensitive query, Cloudkit JS

Hey!

I'm firing this query:

var query = {
 recordType: 'Users'
  filterBy: [{
    comparator: 'EQUALS',
    fieldName: 'Name',
    fieldValue: { value: 'Steve' }
    }]
}

But it's only returning users with the name "Steve", not anyone named "steve". How can I make this query case insensitive? I tried replacing 'EQUALS' with 'BEGINS_WITH', but still doesn't work 😟