Decrement Number (-=)

Reads and decreases the configured Number Variable by Amount. Initialize the binding before using it.

Where to find it

Set Variable → Operations → Choose Operation → Number. Requires Dev access to configure, then a successful compile to activate.

Inputs

Input	Type	Role	Requirement	Default / constraint
Number	Number	Variable binding	Required	Required
Amount	Number	Value	Optional	1

Result and behavior

Stores the result in the first configured destination Variable. Its type must match the result and any generic element/key types.

Configuration example

Block: Set Variable → Operations
Operation: Decrement Number (-=)
Number: Private Number result
Amount: 1

Use this as an editor configuration: declare any Variables/collections first and choose real locations/eligible targets for your plot. It is not pasteable source code.

Restrictions and troubleshooting

Numeric inputs/results must remain finite. Integral fields floor before bounds checks. Invalid arithmetic fails before assignment.

Related guides

Editor · Arguments · Targets · Expressions · Native behavior

Reference identifier: math.decrement.