Filter for Middle ware Object KTOKD in SAP CRM

Hello All,

I have run an initial download for the object DNL_ KTOKD, all of my account groups from R3 to CRM have got downloaded,

My query is how can I set the filter so that only selected R3 Account Groups come into SAP CRM.

As per the below post the filter needs to be set in the adapter object CUSTOMER_MAIN

http://scn.sap.com/message/6665680

However when I try to set the filter the system throws an error message(screen shot attached)

Please advice

Kind Regards

Atul