PREVAL returns a previous case value

Syntax

PREVAL(Case_ParPa, NumExp)

Arguments 

• Case_Par is the parameter from which a previous case value is requested
• NumExp is a numeric expression is the number of cases back from which the value is to be taken.

...

Let the current case number be 9, then

PREVAL(A4,3)

will return the value for A in case number 6 (9-3=6)

Quick links: Function overview | Attribute overview | Constants overview | Dimensions overview