SimpleSchema error: After filtering out keys not in the schema, your modifier is now empty
<p>I created new SimpleSchema for my collection. Collection definition &amp; schema:</p>

<p><a href="https://gist.github.com/CandyOgre/c767032f34eeb78323becb3aa7ec83b3" rel="nofollow">GIST</a></p>

<p>After calling this method from client:</p>

<pre><code>export const setEventInvitationStatus = new ValidatedMethod({
 name: 'events.updateParticipantStatus',

 mixins: [LoggedInMixin],

 checkLoggedInError: {
  error: 'notLogged',
 },

 validate: new SimpleSchema({
  eventId: { type: String },
  inviteTo: { type: String },
  newStatus: { type: String },
 }).validator(),

 run({ eventId, inviteTo, newStatus }) {
  Events.update(
    {  '_id': eventId, 'participants.userId': inviteTo },
   {
    $set: { 'participants.$.inviteStatus': newStatus },
   });
 },
});
</code></pre>

<p>I get this error:</p>

<pre><code>Exception while invoking method 'events.updateParticipantStatus' { stack: 'Error: After filtering out keys not in the schema, your modifier is now empty\n    at [object Object].doValidate (packages/aldeed_collection2-core/lib/collection2.js:374:1)\n    at [object Object].Mongo.Collection.(anonymous function) [as update] (packages/aldeed_collection2-core/lib/collection2.js:173:1)\n    at [object Object].run (imports/api/events/server/methods.js:101:10)\n    at [object Object].LoggedInMixin.methodOptions.run (packages/tunifight:loggedin-mixin/loggedin-mixin.js:28:16)\n    at ValidatedMethod._execute (packages/mdg:validated-method/validated-method.js:93:12)\n    at [object Object].ValidatedMethod.connection.methods._connection$methods.(anonymous function) (packages/mdg:validated-method/validated-method.js:54:23)\n    at [object Object].methodMap.(anonymous function) (packages/meteorhacks_kadira/lib/hijack/wrap_session.js:164:1)\n    at maybeAuditArgumentChecks (packages/ddp-server/livedata_server.js:1704:12)\n    at packages/ddp-server/livedata_server.js:711:19\n    at [object Object]._.extend.withValue (packages/meteor/dynamics_nodejs.js:56:1)',
</code></pre>

<p>What I do wrong ?</p>