Document path change in UDF attachment fields

Hi all,

I have upgrade my SAP B1 9.0 to SAP 9.2 PL 2. I have create a new server for SAP 9.2. I have some UDFs for attachments in different marketing document. when we save any document, it save network path with file name. It is showing me old server name with file name. So I am not able to open old attachments. So please suggest me how can I change the new server name in place of old server name.

Do I change the path by SQL command or we have any option on SAP B1 Front End.