message: Set number type for maxSelectedChoices property
diff: @@ -401,7 +401,7 @@ Serializer.addClass(
  "checkbox",
  [
  "hasSelectAll:boolean",
  - { name: "maxSelectedChoices", default: 0 },
  + { name: "maxSelectedChoices:number", default: 0 },
  { name: "selectAllText", serializationProperty: "locSelectAllText" },
  ],
  function() {
  