stop while from outside loop

[Esther.Lopez]

Hello
I hava an application with a while loop. Outside this loop there is a
subVI, that contains also a while loop. This subVI can be stoped when
the main VI loop stops. This works correctly.
But the subvi, can also stop itself, and when it happens I want the
main VI loop to stop also.
How can I do this?
(The idea is that the loop in the subvi has to stop the main VI loop)
Thank you very much!!