Hi @mskym111
Check the below workflow:
Input = "2022.03.17"
Output= DateTime.ParseExact(Input.ToString,"yyyy.MM.dd",System.Globalization.CultureInfo.InvariantCulture).AddDays(14)
Here Input variable refers to output of GetText Variable. And Output is of DataType System.DateTime.
Another case:
Input = "2022.03.17"
Output= DateTime.ParseExact(Input.ToString,"yyyy.MM.dd",System.Globalization.CultureInfo.InvariantCulture).AddDays(14).ToString("yyyy.MM.dd")
Here Input variable refers to output of GetText Variable. And Output is of DataType System.String.
Regards

