Reading Letter/Fax associated to a CASE IN WebUI

Hi All,

  I need to read and check a letter which is associated with a case. But the problem is component in which we input letter is different from the component where we check. I tried following two option but nothing worked.

     1. I tried to read Global Custom Controller(GLOBAL.ICCMP_FAXLETTER/CuCoFaxLetter), but i get no instance of this custom controller

     2. I tried to read it based on BOL relations, but i see no relation which has link to letter

Any Suggestions/inputs highly appreciated

Thanks & Regards

Gokul Ragunathan