Question about using Staff of Resilence

[Cecil212]

Im reading Adventurer's Vault 2, the Staff of Resilence says:
Power (Daily). Minor Action. You spend a Healing Surge but regain no hit points. Instead, you gain temporary hit points equal to twice your healing surge value.

My question is:
Is it possible to use the Daily from the Staff of Resilence, then put it in my bag and still keep those Temporary Hit Points?

Or do I loose them the moment I loose my Staff?

 

[Jhaelen]

Once you used the power you no longer need the staff. However, note that the temporary hit points will be lost after 5 minutes (or the next encounter).