Reg : Defaulting Rule

Hello Experts,

We would like to default the request date in to pricing date. Whenever we cahnge the request date pricing date should also change. We added tthe following price of code in OE_DEPENDENCIES_EXTN package and created a defaulting rule for pricing date. But is not working. Can you please help us in fixing this issue ?

x_extn_dep_tbl(l_index).source_attribute := OE_LINE_UTIL.G_REQUEST_DATE;

        x_extn_dep_tbl(l_index).dependent_attribute := OE_LINE_UTIL.G_PRICING_DATE;

        x_extn_dep_tbl(l_index).enabled_flag := 'Y';

        l_index := l_index + 1;

Regards,