Angularjs, watching variable value change

I have the AngularJS module declaration as below, Here I have declared value "AppModel". I wanted to write code which will be triggered when "AppModel.currentTable" is changed, How can I "watch" for this value change ?

angular.module('MIIApp', ['MIIServices']).
value("AppModel",{
    currentTable:"TESTME-h",
    currentUser:null
});

I don’t think you should be doing this. As you can see here a value is intended to be a constant:

value(name, value)

A short hand for configuring services if the $get method is a constant.

In AngularJS a service is a singleton and a value is the most simple of the possible services, when called returns always the same. I don’t know what you need, but could it be you are confusing models with services?