Characteristic routine - Date field not filling up

Hi,

I have a requirement as follows.  There are 2 date fields, Clearing date & Posting date in Datasource.  I have to create a Z Infoobject in DSO & fill in the same using this 2 fields.  If Clearing date field has data, it should go in to the Z field.  If the Clearing date field is Blank, i have to get posting date data & fill it in the Z field.

In Transformation from Datasource to DSO, I wrote a Characteristic routine as below for the Z Object mapping Clearing date & Posting date to the Z field.

IF SOURCE_FIELDS-AUGDT EQ ' '.

   RESULT = SOURCE_FIELDS-BUDAT.

ELSE.

   RESULT = SOURCE_FIELDS-AUGDT.

ENDIF.

• AUGDT is Clearing Date

• BUDAT is Posting Date

Problem is when i execute the load, in the Z Object output i get values only when Clearing date field has values.  For the rows where Clearing date field is empty, i am not getting the Posting date value in the Z Object output. 

I am sure that the code above is right, but why is not putting the Posting date value in the Z Object when Clearing date is empty.

Regards,

Murali