Which of the following is not a parameter of the if() function?

The correct answer is that an array is not a parameter of the if() function in Appian. The if() function is designed to evaluate a Boolean expression and return one of two values based on whether that expression evaluates to true or false.

The parameters of the if() function include:

1. A Boolean expression that determines which value to return.

2. The true value that is returned when the Boolean expression evaluates to true.

3. The false value that is returned when the Boolean expression evaluates to false.

An array, however, does not fit into this structure as a valid parameter. Instead, the function directly deals with Boolean conditions and specific return values, rather than collections of values like arrays. This distinction is important for understanding how conditional logic is structured in Appian's functions.