which parameter basis value should i use in hcm extract flow pattern for passing payroll period

Summary:

HI forum:

I need to create a custom flow pattern (HCM Extact) for Element Deductions extract to be scheduled weekly.

What is the correct parameter basis to use to grab the extract parameter 'payroll period number ' for the latest pp as pattern will be scheduled.

Context Bind, or Bind to Flow?

Also, do i need to explicitly add Payroll Period as a flow parameter?

Thank you

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