Move String to 01 Structur?

Hi, i have a Little Problem with a String under Visual Cobol 2.3 Update 2 / VS 2012

If will move this:

01 MyDataBlock string.

to this 01 Structur:

01 Mein-Link01.

   05 Benutzer-Name PIC X(30).

   05 Benutzer-PW PIC X(08).

   05 Benutzer-Recht-Tabelle.

      10 Benutzer-Rechte-Tab Occurs 999.

         15 Benutzer-Rechte-KZ PIC X.

   05 Benutzer-Abteilung PIC X(30).

This move will not working correct:

move MyDataBlock To Mein-Link01

What is wrong?