Multipe filters on Hierarchy nodes in DTP

Hello Everybody,

I need your help:

I need to filter in a DTP on several Hierarchy nodes.

I have tried to do it with an OLAP Variable but it did not work.

FIRST QUESTION:

is it possible to do that with an OLAP variable? how should I set up the variable?

Since I am not a programmer, can you help me with the code - if I have to create a customer Exit variable?

SECOND QUESTION

if I can not create an OLAP VAR - shall I do it directly in the DTP? is it possible?

Can you provide me with the code pls? I need to filter on different  ( 10 ) nodes of the Hierachy - I have googled it but not found any clear response

I really appreciate your help

many thanks

Manu