SQL & PL/SQL :: ORA-00984 / Column Not Allowed Here

I have created the following package-

create or replace PACKAGE TABLE_PKG1 AS
PROCEDURE make(table_name VARCHAR2, colspec varchar2);
PROCEDURE add_row(table_name VARCHAR2, value_s VARCHAR2,cols VARCHAR2);
END TABLE_PKG1
CREATE OR REPLACE PACKAGE BODY TABLE_PKG1 AS

[code]....

The package and the package body compiles successfully. When I add table-

BEGIN
TABLE_PKG1.make('EMP_new','country varchar2(20), currency varchar2(20)');
END;

The table is created successfully.However when I invoke the package using the following anonymous block for adding the row-

SET SERVEROUTPUT ON
BEGIN
TABLE_PKG1.add_row('EMP_new','"India","Rs"','Country,Currency');
END;

The it generates the following error-

Error report:

ORA-00984: column not allowed here
ORA-06512: at "SCOTT.TABLE_PKG1", line 14
ORA-06512: at line 2
00984. 00000 - "column not allowed here"