Deductions & credits

Dave - I am using Turbox Tax Premier to enter an long-term appreciated stock donation to a donor advised fund.  It is not using the FMV although the cost basis is lower than the FMV.  I have selected "Various" and also a date older than 1 year for Date Acquired.  It is not working like the way you're explaining.  I know my cost basis and wondering why I should enter 0 or FMV as cost basis to make the Turbo Tax program work.  Please address this.