PP Experts, In random  number selection component do we have to specify a number for it run?.  In my case (protocol attached)

I am first reading a file; and Counting the number of  compounds in it through count and index data component (Counter Property  @ActiveCases) where @ActiveCases comes out to be 1650;

Next  I am reading another file which has ~10000 compounds on which i have  put a Random N Selection component through which i am trying to randomly  select same number of compounds as file one ( I have put Number to Keep  as \$(@ActiveCases).

This is not working and clearly i am missing some point here. Any suggestions please.

Thank you

nar