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While applying the relative dates Slesforce, I use the below filter in reports if I want to generate a report based on the date range for my end user:
Issued date greater or equal to 01/01/2016 (start date) AND Issused date less or equal to 31/12/2016 (end date --> always 1 year from start date)
I am looking for a formula in the filter so that when my end-user enters any start date, Salesforce will automatically compute 1 year from the start date.