The Number Exchange building block is used to convert one Number value into another Number value.
A Number Exchange building block has one Number input and one Number output. If the building block has been configured to exchange the current input value, then the output value will be equal to the replacement value. Otherwise, the output value will be equal to the input value.
A Number building block is configured by creating a list of input/output value pairs. When the building block's input is equal to one of the input values in the list, the block's output will be set to the corresponding output value. When the building block's input value is not in the list, then the output value will be equal to the input value.
In the example to the right, the building block is configured to exchange eight input values with different output values.