How to use multiple counts to achieve an OR filter on arrayed values in Keen IO (even though we don't recommend arrays if possible!)

gistfile1.js

 
// example event model
 
// User_Created_Event = {
//     "full_name": "Macy Bode",
//     "communities": [6,7,8],
//     "email": "[email protected]"
// },
 
// Find the number of users in Community 6 or 7
 
 
Keen.ready(function() {
    var countA = new Keen.Query("count", {
        eventCollection: "User Created",
        filters: [{
            "property_name": "communities",
            "operator": "eq",
            "property_value": 6
        }]
    });
    
    var countB = new Keen.Query("count", {
        eventCollection: "User Created",
        filters: [{
            "property_name": "communities",
            "operator": "eq",
            "property_value": 7
        }]
    });
 
    var countAnB = new Keen.Query("count", {
        eventCollection: "User Created",
        filters: [{
            "property_name": "communities",
            "operator": "eq",
            "property_value": 6
        },
            "property_name": "communities",
            "operator": "eq",
            "property_value": 7
        }]
    });    
  
    client.run([countA, countB, countAnB], function(response){
       // number of users in community 6 or community 7 is the number in each minus those in both
       var solution = response[0].result + response[1].result - response[2].result
    }); 
});