Fix broadband plan change update

app/Http/Requests/ServiceChangeRequest.php

@@ -32,6 +32,7 @@ class ServiceChangeRequest extends FormRequest
         return [
             'broadband.product_id' => 'required|exists:products,id',
 			'broadband.change_fee' => 'nullable|numeric',
+			'broadband.price' => 'nullable|numeric',
 			'broadband.start_at' => 'required|date',	// @todo Check that it is not more than 1 billing cycle ago, and not future.
         ];
     }