Validator on autoform method-update

Hi, i'm using autoform to generate an update form

```
{{#with area}}
{{#autoForm
collection="Areas"
id="updateAreasForm"
type="method-update"
meteormethod="Areas.methods.update"
doc=this
class="form-horizontal"
}}
{{> afQuickField name='nome' label-class="col-sm-3" input-col-class="col-sm-9"}}
{{> afQuickField name='tipo' label-class="col-sm-3" input-col-class="col-sm-9"}}
{{#unless afFieldValueIs name='tipo' value=1}}
{{> afQuickField name='paiId' label-class="col-sm-3" input-col-class="col-sm-9"}}
{{/unless}}
{{> afQuickField name='ativo' label-class="col-sm-3" input-col-class="col-sm-9"}}
{{> submit texto="Editar"}}
{{/autoForm}}
{{/with}}
```

Here's the definition of the method:

```
Areas.methods.update = new ValidatedMethod({
name: 'Areas.methods.update',
validate: Schemas.Areas.validator(),
run(modifier, _id) {
console.log(modifier, _id);
return Areas.update({_id: _id}, modifier);
}
});
```

I'm getting this error:

```
Exception while simulating the effect of invoking 'Areas.methods.update' Error: When the validation object contains mongo operators, you must set the modifier option to true(…) Error: When the validation object contains mongo operators, you must set the modifier option to true
at doValidation1 (http://localhost:3000/packages/aldeed_simple-schema.js?3d6ebc811c555e8ab1ad73b249a995dc641334ed:2278:11)
at doValidation (http://localhost:3000/packages/aldeed_simple-schema.js?3d6ebc811c555e8ab1ad73b249a995dc641334ed:2910:10)
at SimpleSchemaValidationContext.simpleSchemaValidationContextValidate [as validate] (http://localhost:3000/packages/aldeed_simple-schema.js?3d6ebc811c555e8ab1ad73b249a995dc641334ed:2945:21)
at SimpleSchema.validate (http://localhost:3000/packages/aldeed_simple-schema.js?3d6ebc811c555e8ab1ad73b249a995dc641334ed:2132:35)
at null. (http://localhost:3000/packages/aldeed_simple-schema.js?3d6ebc811c555e8ab1ad73b249a995dc641334ed:2154:10)
at ValidatedMethod._execute (http://localhost:3000/packages/mdg_validated-method.js?a862c6e60ea48391f9f16ddbf7d1748fa9231a3b:118:64)
at ValidatedMethod.connection.methods._connection$methods.(anonymous function) (http://localhost:3000/packages/mdg_validated-method.js?a862c6e60ea48391f9f16ddbf7d1748fa9231a3b:71:21)
at http://localhost:3000/packages/ddp-client.js?250b63e6c919c5383a0511ee4efbf42bb70a650f:3911:25
at _.extend.withValue (http://localhost:3000/packages/meteor.js?9730f4ff059088b3f7f14c0672d155218a1802d4:971:17)
at _.extend.apply (http://localhost:3000/packages/ddp-client.js?250b63e6c919c5383a0511ee4efbf42bb70a650f:3902:54)
```

Do you guys have any idea about what is happening? Thanks

Start by reproducing the autoform `method-update` call with `Areas.methods.update` and `Schemas.Areas.validator()`, then inspect how the validation object is passed to `ValidatedMethod`. Compare the generated modifier with the validation error and verify the expected behavior using the existing issue example.

Written by the indexing model from the issue text.