An array is defined by [] and contains a list of values separated by a comma. Those values may be string, number, boolean and even object or array.
In this example we have a list of the best selling single-volume books.
The module "Display -> Fast table" is designed to display an array.
You may add a new Fast table module and put as "variables in" the array called "myArray".
You should then save the parameters and come back to the parameters in order to select: