HANA Express Edition SQLSCRIPT_SYNC not found when creating procedure

Hello experts,

when I try to create the procedure

PROCEDURE "wait" 
    (      )
    LANGUAGE SQLSCRIPT SQL 
    SECURITY INVOKER 
    AS 
 BEGIN   
  USING SQLSCRIPT_SYNC AS SYNCLIB;
  IF 1 = 1 THEN     CALL SYNCLIB:SLEEP_SECONDS(30000);   END IF;  END; 

in db module of my XSA project, WebIDE is showing the error

in the console.

When I create the procedure in Eclipse for User XSA_ADMIN the procedure will be created successfully.

Thanks for your help

Achim