Has anyone parsed Appian URL with parameters?

I have a scenario in which i am passing parameters to Appian url to access it in another user form.

For ex-

https://<Company>.appiancloud.com/suite/tempo/actions/item/ProcessID?Param1=1234

I am not sure how to parse Param1=1234 and apply it to one of the fields on the  Appian user form.

Any guidance would be much appreciated.

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