Retroactively apply block diagram password to all subVI's?

[ijustlovemath]

Is there a way, maybe using property nodes of some sort, to apply a block diagram password to all subVI's by applying it to a main VI?

[Alexander_Sobolev]

Simple way: create source distribution in project, set password, copy build over source files.

a little more difficult way: get vi reference, set password, save.

How to get all subVIs references... One of the project items is Dependencies, if project consists only of this VI - you have links to the current VI's subVIs. May be there is simpler way.