Hi Ezhno,
I think it can be done without implementing a BADI.
1. As stated above, the first step is to add a new field in the search structure, lets say ZZ_TESTFIELD1.
2. Make the following entry in SM30, table CRMC_REPDY:
Selection field is your field in the search structure, field name is your field on the database (in the customer_h append structure)
3. As stated above, add it to your WebUI configuration.
Thats it. Should also work for the result list if you add your field in the search result structure.
It would be nice if someone could confirm this, the solution is acutally from a solution manager system.
Best Regards,
Christoph