Filter one data source based on an output from another data source

Hi All,

I would like to use the output result of one data source (eg: DS_2) as the input to another data source (eg:DS_1) as shown in below figure.

I tried many things like below. But none had worked for me.

Tried and failed codes are given below.

TRY # 1 DS_1.setFilterExt("0PLANT", DS_2.getFilterExt("0PLANT"));

TRY # 2 DS_1.setFilter("0PLANT", DS_2.getFilter("0PLANT"));

TRY # 3 DS_1.setFilter("0PLANT", DS_2.getFilterExt("0PLANT"));

TRY # 4 DS_1.setFilter("0PLANT", DS_2.getMembers("0PLANT",10));

TRY # 5 DS_1.setFilter("0PLANT", ["1111", "1122","2211","3311"]);

The last one (TRY # 5) is worked for me. But in my case the list of  values(Output of DS_2) will change at Application run time based on its input(Date input).

S/w versions

BW-7.4 SP10 with HANA

DS 1.5

If anyone could help me with valuable suggestions?

thanks in advance,

Aby