BizTalk Adapter for Oracle Database Procedure Problem

I have BizTalk 2006 and Microsoft BizTalk Adapter for Oracle Database problem when using stored procedures.I have created PL/SQL procedure to Oracle database:
 

SQL> desc XXDEB_CALL_SERVICES;
PROCEDURE CHECK_FILE_EXIST
Argument Name                  Type                    In/Out Default?
—————————— ———————– —— ——–
P_FILENAME                     VARCHAR2                IN
P_FILEOK                       BOOLEAN                 OUT
 
BizTalk created this kind of schema:
 
<Schema>
  | — CHECK_FILE_EXIST
    | — P-FILENAME
  | — CHECK_FILE_EXISTResponse
    | — P-FILEOK
 
I used Static Solicit-Response send port to send P_FILENAME and to receive P-FILEOK. However it returns this to event log:
 
System defined exception
Call to CHECK_FILE_EXIST@OracleDb://TERPSAND/XXDEB/Procedures/XXDEB_CALL_SERVICES
    Implementation = OracleDb://TERPSAND/XXDEB/Procedures/XXDEB_CALL_SERVICES
 
        Source: OracleDb
        Error Code: 6550 (0x1996)
        Cause: OracleDb://exception=DBException (Unique ID <none>)
    HY000 : [Oracle][ODBC][Ora]ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'CHECK_FILE_EXIST'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
 
    Exception data:
        struct DBException =
            WideString StatusCode = "HY000"
            WideString Description = "[Oracle][ODBC][Ora]ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'CHECK_FILE_EXIST'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
" 
What I’m missing here?