stored procedure issue with package

issue : if i am calling stored procedure from  "Package1.PROCEDURE1"; then its works.but if i am using only storedprocedure then its not works
(if put procedure in package its work but without package its not works when i passed array from c# code.
 Wrong number or type of arguments

try

            {

                objCommand = new OracleCommand();
             
                objCommand.Connection = GetConnectionString();

                    objCommand.CommandText = "Package1.PROCEDURE1";

                      objCommand.CommandType = CommandType.StoredProcedure;

                OracleParameter param =new OracleParameter();

                param.OracleDbType=OracleDbType.Varchar2;

                param.CollectionType=OracleCollectionType.PLSQLAssociativeArray;

                param.Value=new string [2] {"4","3"};

                param.Size=20;

                 objCommand.Parameters.Add(param);

                //Output parameter to the stored procedure

                //objCommand.Parameters.Add("po_output_cnt", OracleDbType.Varchar2, 10).Direction = ParameterDirection.Output;

 
                objCommand.ExecuteNonQuery();

                 
                //Close the database connection

                CloseConnection();

 

                //converting return parameter into boolean.

                //if (string.IsNullOrWhiteSpace(returnStatus) || returnStatus.Equals("0"))

                    //returnValue = false;

                //else

                    //returnValue = true;

 

            }

--------------------
Prcodeure
create or replace package package1
as
type name is table of varchar2(20) index by pls_integer;
PROCEDURE PROCEDURE1(param in name);
end package1;
 
create or replace package body package1 as
PROCEDURE PROCEDURE1(param in name) is
BEGIN
for i in param.first..param.last loop
insert into jobs(jobid) values(param(i));
end loop;
END PROCEDURE1;
end package1;
 
Error :- Wrong number or type of arguments