cx_Oracle + array parameter

[lukasz.f24 at gmail.com]

Hello,

I'm trying to pass array as an argument into PL/SQL procedure.
According to cursor manual (http://cx-oracle.sourceforge.net/html/
cursorobj.html) arrayvar() should be use to do it. I've created my
array type in PL/SQL:

CREATE OR REPLACE TYPE cx_array_string is table of varchar2(200);

and simple procedure:

CREATE OR REPLACE PROCEDURE text(ret IN cx_array_string) IS
BEGIN
    null;
END text;

My python code:

p_array = curs.arrayvar(cx_Oracle.STRING, ['1','3'])
curs.execute('BEGIN text( :1 ); end;', [p_array] )

And it gives me back an error:
cx_Oracle.DatabaseError: ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'TEXT'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored

It's the same when i try to use callproc() instead of execute(). I've
searched whole internet with no luck. Could anyone please give me a
working example python + pl/sql how to pass string array form py to
oracle procedure, please.

Thank you!