Dynamically passing filter values using custom script

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Hi Gurus,

I am able to fetch filter value of report into custom script  using below syntax.

$ value = $params["search_args"]["search_field0"]["val"];

But my requirement is to pass the value to the particular filter dynamically. 

i have tried below syntax

$params["search_args"]["search_field0"]["val"] = 1191;

But it is not working .

Can we pass the value dynamically into the report filter while running the report using custom script? if yes, please help me with appropriate syntax. 

 

Best Regards

Naveen Samineni