ETH Prefix? Share? Unable to connect

Hi,

I'm unable to connect to my WD NAS. 303: Cannot open SMB share
I have multiple shares on my NAS

Structure on NAS:
root
- Backup
- Volume1
- TV
- Progamme_Spiele

The PS2 Isos are here
\\homenas(or 192.168.0.48)\Programme_Spiele\Spiele\Roms\ps2\DVD

So i suggested that i have to put the following into the ETH Prefix:
Programme_Spiele\Spiele\Roms

And following as Share:
ps2

So where am i wrong?
ETH device start mode AUTO

PS2
static
192.168.0.37
\24
.1
.1

SMB
IP
192.168.0.48
445...

ETH Prefix? Share? Unable to connect