Why queryProcessAnalytics function is not working in rule event?

   

When i try to use this function inside rule event it will throw an below error,

"(ERROR:EVAL:@reason=index)"and process status is changed to "Paused By Exception"
How do i resolve this?

P.S. :- Value of pv!ppid_int is set to tp!id (also tried with ri! and pp!id)

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