Hi Andrea,

If you have this kind of questions, you should add a plunk 
<http://plnkr.co/edit/tpl:QzPKsT47fvBoPABDSCr4>, that makes it easier to 
help you!

Your watch will fire during init 1 time. After that it should when you 
select selects another value.
However, you should not be using a $watch here. Realize yourself that 
$watches are costly. See them as a last resort solution.
In this case, you can do something like this:

 <select class="form-control" ng-model="type" ng-init="type = ''" 
    ng-options="item.tipo as item.label for item in usertype | 
orderBy:'toString()'" ng-change='updateType(type)'></select>

does that help you?

Regards
Sander
​

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