SAP HANA Cloud Trial - insufficient privilege

Dear community,

I use the HANA Tools for Eclipse and a free Trial HANA Instance on SAP HANA Cloud Platform.

However I have some Problems with the Application Function Library. I can set the Schema to _SYS_AFL but can't drop, create there some view or table.

My code looks like following:

SET SCHEMA _SYS_AFL;
DROP TYPE PAL_DATA_T;
CREATE TYPE PAL_DATA_T AS TABLE(
"CLIENTID" INT,
"ITEM" VARCHAR(100)
);

and I get following Errors:

Statement 'SET SCHEMA _SYS_AFL' 
successfully executed in 12 ms 464 µs  (server processing time: 0 ms 212 µs) - Rows Affected: 0 
Could not execute 'DROP TYPE PAL_DATA_T'
SAP DBTech JDBC: [395]: invalid user-defined type name: PAL_DATA_T: line 1 col 11 (at pos 10)
Could not execute 'CREATE TYPE PAL_DATA_T AS TABLE( "CLIENTID" INT, "ITEM" VARCHAR(100) )'
SAP DBTech JDBC: [258]: insufficient privilege: Not authorized

Any help appreciated!

Regards Matthias