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PCL; Patran Random - "random_randps_input.create_randps_file" input variables

Hello!
I am trying to execute Patran Random through PCL but I have a problem with 6th input parameter - an array with some integer: [3152]:
 
random_randps_input.create_randps_file( out_rnd_name, 1, fresp_case_id_buf, fresp_case_id_buf, [1.], [0.], [3152], FALSE, ["log"], ["log"] )
 
I noticed (by executing manually and viewing log) that the array value changes from model to model. What is it? How to get that value?