different behaviour creating links in console command or script Winscp

Hi

having nas 412 with newest Firmware 4.2.0

I tested a simple command in Winscp:
utf-8 is on

mkdir testaäa in console as a simple command via winscp

and in winscp console as script or as execute custom command : file test only one command: mkdir testaäa

result is in WINSCP both times:
a directory created as requested:
testaäa

but in windows with samba share (Windows 8.1)
result is different:

directory create with script looks like: 0VR6CY~7
directory created with a single command in console : is corret as expected: testaäa

anyone knows what I am doing wrong?

By the way, in Putty I can not enter and ü????

thanks

Thomas

--- ModEdit ---

Hi

I can not create an object in putty with special characters.
entering a ü for example is resolved to exit?

I can in winscp but not only in console (not in script or command mode) strange

UTF-8 is on

Having firmware 4.2.0 on TS-412

Thanks