Hi @Anirban.sensarma,
Yes, you are correct. That'll be the best work around.
Thank you.
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Please take a look into the following similar discussion.
How to Place Reset Button for Parameters on BIP? — Oracle Analytics
Hope this help.
thanks i have gone through this already . i think only way possible is to create dashboard prompt and then map that with BIP report parameter and then use the prompt. which will have reset button