Flexmonster Demo - Filtering out Blanks

HTML

<script src="https://s3.amazonaws.com/flexmonster/2.2/flexmonster.js"></script>
<div id="pivot-content"></div>

JavaScript

var jsondata = [{
		"Date": {type: "date string"},
    "Color": {type: "string"},
    "M": {type: "month"},
    "W": {type: "weekday"},
    "country": {type: "string"},
    "state": {type: "string"},
    "city": {type: "string"},
    "Price": {type: "number"},
    "Quantity": {type: "number"}
  },{
		"Date": "05/01/2016",
    "Color": "green",
    "M": "September",
    "W": "Wed",
    "country": "Canada",
    "state": "Ontario",
    "city": "Toronto",
    "Price": 174,
    "Quantity": 22
  }, {
  	"Date": "04/30/2016",
    "Color": "red",
    "M": "March",
    "W": "Mon",
    "Time": "1000",
    "country": "USA",
    "state": "California",
    "city": "Los Angeles",
    "Price": null,
    "Quantity": 19
  }, {
  	"Date": null,
    "Color": "red",
    "M": "March",
    "W": "Mon",
    "Time": "1000",
    "country": "USA",
    "state": "California",
    "city": "Los Angeles",
    "Price": 33,
    "Quantity": 1
  }, {
  	"Date": "02/11/2016",
    "Color": "",
    "M": "March",
    "W": "Mon",
    "Time": "1000",
    "country": "USA",
    "state": "California",
    "city": "Los Angeles",
    "Price": 333,
    "Quantity": 10
  }];

var report = {
  configuratorActive: false,
  data: jsondata,
  viewType: "grid",
  rows: [{uniqueName: "Color", filter: {members: ["Color.[]"], negation: true}}],
  columns: [{uniqueName: "Date", filter: {members: ["Date.[Invalid date]"], negation: true}}, {uniqueName: "[Measures]"}],
  measures: [{uniqueName: "Price", aggregation: "average", availableAggregations: ["average"], active: true}, {uniqueName: "Quantity", aggregation: "average", availableAggregations: ["average"]}],
  formats: [{name: "", nullValue: "Keine Angabe"}]
};

report.licenseKey = "Z53G-1T1WC3-1V1M-0L12-2M0A-1233-1I0Y-2Y2Q-1903-322S-0T2C-1I";

flexmonster.embedPivotComponent("https://s3.amazonaws.com/flexmonster/2.2/", "pivot-content", "100%", "600", report, true);