At shadowsocks TV I add myself VPN node by soft menu “Replace by file”,but I can't successful for adding ss.txt

I use shadowsocks TV version on the international version of the mibox 4, add my own VPN node, but click “Replace from file” and then select my own ss.txt file,inside ss.txt there is the address of ssr, but can not be added, do not know how Add your own VPN node? ? I think whether using another file name for adding to shadowsocks TV software?

Use a content URI file explorer, for example, MiXplorer.