Use this procedure to evaluate the result of a formula. After you complete the formula property definition and add the property set to objects, you can use the result of the formula in schedule tables and schedule tags. 
- Confirm that for each property definition in the formula, the value of the property is: 
| retrieved from the object or style.  | 
| formatted using the property data format defined in the sample value format.  | 
| inserted into the formula in place of the property definition name and the brackets surrounding it.  | 
 
  
- Evaluate the formula string: 
| If the formula string…  | 
Then…  | 
| contains the word “RESULT”  | 
it is evaluated as a VBScript function, and the value displayed for the property is the result of that evaluation.  | 
| does not contain the word “RESULT”  | 
it is evaluated as a mathematical expression.  | 
 
 Note: Make sure that all property sets used in the formula have been applied to the object or style. Otherwise, a question mark (?) is displayed in the schedule table.