Parameters
Parameters depict the properties of items, formulas, and other Optiva objects that can be measured, calculated, or stated.
Examples of formula characteristics described by parameters are:
- The percentage of sodium in the formula
 - The pH of the formula
 - The cost of producing the formula
 - The boiling point of the formula
 - The drying time of the formula
 - The SPF of the formula
 - The presence of a restricted ingredient in the formula
 
Many parameters of a formula are calculated or pulled from the parameters of its items.
Some of these items can be sub-formulas or intermediate formulas. These formulas calculate their parameters from other items.
Altering the amounts of any item in a formula can affect the values of one or more parameters for the formula. When users click , Optiva updates any changes to item amounts and recalculates the values of the formula’s parameters. Calculation automatically occurs when a user saves a formula.
Parameters are assigned to a unit of measure. Therefore, units of measure must be defined before parameters are defined.