bind grid to oracle Stored Procedure

Hi Telerik

i saw you example about using stored procedures to bind the grid

now i tried that with oracle it returns error

PLS-00306: wrong number or types of arguments in call to 'SELECTALL_MAINTYPE'

which is correct since oracle has a paramter

CREATE OR REPLACE PROCEDURE SelectAll_MainType (  p_Cursor OUT SYS_REFCURSOR)    
IS  
BEGIN  
OPEN p_Cursor  for SELECT * FROM MAINTYPES ;   
END;
/
how to send that paramter and still use the automaic operation on the grid