Store list and trigger it later

Hi,

how is it possible to store a list and trigger it later? Right now I always use a message object, set the message with the right inlet and trigger it with the left outlet, when i need it. This is not nice, as I receive long lists and the message object gets big. On the picture you can see a for me common case:

I found the pv object, is it the right object for doing such things?