appRate does not exist on type myApp

I’m trying to add appRate to my app
after I installed the plugin i got this error Property 'appRate' does not exist on type 'MyApp'.
my code

this.ppRate.preferences = {
                    usesUntilPrompt: 3,
                    storeAppURL: {
                     ios: '<app_id>',
                     android: 'market://details?id=<package_name>',
                     windows: 'ms-windows-store://review/?ProductId=<store_id>'

Does the constructor for this class look exactly like the one in the docs you linked?

thank you @rapropos <3