setting initial values

[onelabone]

1. what is the proper way to set initial value from data from http request?

2. how to change the initial value? Right now, when I do $reset, it will reset value to the initial value when the store is created (say 0). In my case, I want to update the state value after certain action (e.g. update a value to 1) and at that point i want the initial value to be set to the updated value (1). Upon $reset , i want to get 1 instead of 0.

Thanks a lot!