Calculating Due days using a formula column and Date column

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1

Hi All,
I’m new to monday.com. I have been trying to calculate difference between 2 dates. I’m using “DAYS” function for this. I have two columns

  1. Task 1 Original date: which is a formula column generating date.
  2. Task 1 Done date: Which is a date column and user will input the date.

Formula using:
DAYS({Task 1 Original date}, {Task 1 Done date})

Using above formula I’m getting error. Is there a way I can calculate Due days using formula and date columns.

Thanks,
Sakhi