User Guide

160
Chapter 7
Specify Result of Adding or Subtracting a Duration from a Date/Time Variable
Figure 7-23
Add or subtra
ct duratio n, step 3
E Enter a name for Result Variable. This cannot be the name of an existing variable.
Optionally, you can:
 Assign a descriptive variable label to the new variable.
Subtra
ct Date-Format Variables
To subt
ract two date-format variables:
E Selec
t
Calculate the number of time units between two dates on the screen of the Date
and Time Wizard labeled Do Calculations on Dates.