Hi all, I have One custome field i.e. Hotel_Started_Date__C and i have another field i.e. Number_Of_Years__C. So, i need to get total years in between old date and Today date. For Example, if i enter "01/01/2000" in Hotel_Started_Date__C. It's need to calculate old date(01/01/2000) -  today date(09/09/2015) = 15 years. That 15 years nee to store in Number_Of_Years__C.

Note : Using Triggers

Thanks in advance
Thulasi

difference between "Trigger.New" and "Trigger.old".