Combination negation

You can set a rule to perform an action when a condition is not true.

You can use these operators to test whether one or more conditions are not true.

it is not true that

You use the operator it is not true that to negate a condition.

The following condition checks whether the customer is a member of the Gold category:

if 
	the category of customer is Gold 
then...

To check whether the customer is not a member of the Gold category, you can use the following statement:

if 
	it is not true that the category of customer is Gold 
then...

none of the following conditions are true

You can negate a group of conditions by using the operator none of the following conditions are true. The logical operator and links the conditions in the group:

if 
	all the following conditions are true: 
		- the category of customer is Gold 
		- the age of customer is at most 15 
then...

The following if statement is true only if all of the conditions are not true:

if 
	none of the following conditions are true: 
		- the category of customer is Gold 
		- the age of customer is at most 15 
then...