Table maintainence

Hello guys,

I have a requirement here. Please help me.

I had created a custom table and had developed a custom program for creating new entries in that table.

Basically the functionality of this program is similar to SM30.

When I click NEW ENTRIES tab (table maintainence screen) for this table, 24 empty rows will be displayed with some default value say 'ABCD'in one of the columns for all 24 rows(pulling ABCD value from domain assigned to that field/column).

Now my requirement is I have to change that default value 'ABCD' to some other value say 'PQRS' with out changing domain value range when I clicked NEW ENTRIES tab.

How should I add this in PBO event of my program??

Any suggestions???

Thanks in advance.