These commands are used to modify the value of a given number based on the arithmetic operation you select. It's also important to specify the value <n> to use to perform this operation.
The result is written back to the variable (%var%).
List of possible Action values
In this example we have a variable called %LoopAgain% with a value of 10. Once we increase the value of this value with the last parameter of this command we will get the same variable %LoopAgain% with a value of 15. This same example applies for all other available actions.