Take a look at this answer I gave another person about adding days to dates: Re: Adding Days to a Date​.So, depending on whatever value the user picks from the radio button (90, 180, 365), add that number to a periodSelect variable, then run a Num2Date call to set the value of the newDate field. The example below presumes you have a radio button called radioButton1 with default button values of '0' for 90 days, '1' for 180 days, and '2' for 365 days.Example:var periodSelectvar newDate_Numif (rad...