VLC player. How to copy track name to clipboard (lua)?

Question

macOS

Hello.
There is a VLC player on MAC OS. But the ability to copy the name of the track of an online radio station is not implemented.
There is a LUA script for writing this information to a file.

-- now_playing / radio
function now_playing_radio()
    local item=vlc.item or vlc.input.item()
        io.output(vlc.config.userdatadir() .. "/np_radio.txt")
            if item:metas()["now_playing"] then
            io.write(item:metas()["now_playing"])
    else
        io.write(item:name())
        end
    io.close()
end

But I need it in the poppy clipboard, I tried this and that, but it didn’t help:
The first option:

-- now_playing / radio ClipBoard
function set_clipboard()
    local item=vlc.item or vlc.input.item()
        io.popen('cbcopy','w')
            if item:metas()["now_playing"] then
            io.write(item:metas()["now_playing"])
    else
            io.write(item:name())
        end
    io.close()
end

Second option:

-- now_playing / radio ClipBoard
function set_clipboard()
    local item=vlc.item or vlc.input.item()
        if item:metas()["now_playing"] then
        io.popen('pbcopy','w'):write(item:metas()["now_playing"])
    else
        io.popen('pbcopy','w'):write(item:name())
        end
    close()
end

Any thoughts?
Thank you.