Flutter Getx: Can obs create a global variable?

Question

How to make obs a global variable?

Have an option of Getx that can create a global variable?

For the example:

class Test extends GetxController {
  RxString a = "".obs;
}

Page 1:

Test test =  Get.put(Test());
print(test.a.value); //""
test.a.value = "55555";
print(test.a.value); //"55555"

Page 2:

Test test =  Get.put(Test());
print(test.a.value); //""

Answer 1

Update Now, I am using

Class + static

Class:

Class Global {
     static Rx<String> name = "me".obs;
     static ProfileObject profile = ProfileObject();
}

Use:

Obx(()=>Text(Global.name.value)),
Obx(()=>Text(Global.profile.age.value)),

It is easy to use, don't setting just use static in class.