Apologies if English is not your first language, but to say something is “going null” implies the following sequence of events to me:
- X is not null at some point in time
- your app code provably does nothing to change the value of X
- at some later date, X becomes null
There have been many suggestions in this thread, and I am now lost as to what your code is, what problems have been solved, and what problems remain.
Please try reading this thread and see if it seems relevant to your situation.