例子：
setting = dw_1.Object.rpt_1.Nest_Arguments

dw_1.Object.rpt_1.Nest_Arguments = "((~"cust_id~"),(~"'Eastern'~"))"

setting = dw_1.Describe("rpt_1.Nest_Arguments")

dw_1.Modify("rpt_1.Nest_Arguments=((~"cust_id~"),(~"'Eastern'~"))")

dw_1.Modify("rpt_1.Nest_Arguments=()")