Passing value from method to Workflow

Hi All,
I am new to workflow. I am trying simple examples to understand the concepts of work flow.
I have copied a std business object and I have a method in that. Now, I am trying to pass some value to this method from the work flow and get back some value after manipulation with in this method.
In the program for the method, I need to get 2 parameters as input and one parameter as outut. With in this method I am trying to write the code for adding this 2 nos. I have seen some Help docs and came to know I should use SWC_GET_ELEMENT_CONTAINER and SWC_SET_ELEMENT_CONTAINER for this. But, I am ot sure of the syntax.
Can you help me with a sample program for this...
Any help is highly appreciated.
Thanks,
Jai Shankar

hi Jai Shankar,
I give you the sample code of the method where i am finding number of agents
BEGIN_METHOD ZLCPRNUMBEROFUSERS CHANGING CONTAINER.
DATA:
      TEMAILID LIKE SOLI OCCURS 0,
      TAPPROVERS LIKE ZSAFAPPROVERS OCCURS 0,
      WAPPROVERS LIKE TABLE OF ZSAFAPPROVERS WITH HEADER LINE.
      DATA NUMBER LIKE VBAK-VBTYP.
      DATA emailid TYPE STRING.
      data userid type string.
this is the coding where the value that you give the method container
SWC_GET_TABLE CONTAINER 'TEmailId' TEMAILID.
SWC_GET_TABLE CONTAINER 'TApprovers' TAPPROVERS.
SWC_GET_ELEMENT CONTAINER 'NUMBER' NUMBER.
here you can use your own coding like (select query or any other)
CALL FUNCTION 'Z_LC_PR_NUMBER_OF_USERS'
    TABLES
      T_EMAIL_ID = TEMAILID
      T_APPROVERS = TAPPROVERS
    EXCEPTIONS
      OTHERS = 01.
CASE SY-SUBRC.
    WHEN 0.            " OK
    WHEN OTHERS.       " to be implemented
ENDCASE.
SWC_SET_TABLE CONTAINER 'TEmailId' TEMAILID.
SWC_SET_TABLE CONTAINER 'TApprovers' TAPPROVERS.
READ TABLE TAPPROVERS INDEX NUMBER INTO WAPPROVERS.
CALL FUNCTION 'Z_LC_GET_EMPLOYEE_INFO'
EXPORTING
    USER_ID                   = WAPPROVERS-APPROVER_USRID
IMPORTING
     EMP_EMAIL                 = emailid.
here i am doing some manupulation in the function module and i am getting that value to the method container as below.
SWC_SET_ELEMENT CONTAINER 'EMAILID' emailid.
SWC_SET_ELEMENT CONTAINER 'USERID' WAPPROVERS-APPROVER_USRID.
SWC_SET_TABLE CONTAINER 'EMAILID' emailid.
SWC_SET_TABLE CONTAINER 'TApprovers' TAPPROVERS.
END_METHOD.
I think it is helpful for you,
Regards,
Balaji E.

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