Saving several files in the same flow graph

Morning,

I’m working with gnu-radio, and I’ve been modified the python code to
save a file, but I’m having a problem with this, because I have to kill
the flowgraph to save another file, and I want to save in several files
with differents file names without to kill the flowgraph, I mean, it
can be possible to do “online”?

Thanks for your help.