To create a basic array of values, which is the correct formatting for the expression?

The correct formatting for creating a basic array of values in Appian uses curly braces, demonstrating the array's construction in a straightforward way. When declaring an array, Appian utilizes a syntax that makes it clear these are multiple values grouped together.

The notation with curly braces indicates that the values are encapsulated within a single array structure. This is a fundamental aspect of how arrays are defined in Appian, making it clear they are a collection of items that can be of different types, such as strings and integers.

In contrast, the other formats presented do not adhere to the syntax utilized by Appian for array creation. The choice featuring parentheses suggests a function call rather than an array creation, while the square brackets could be confused with JavaScript-style array syntax which is not applicable in this context. The choice with "a!array" implies the use of a specific Appian function geared towards creating a more complex array but is unnecessary for simply defining a basic array.

Using curly braces is the most appropriate format for defining an array in a clear and correct manner within Appian.