---
tags:
    - "Set"
    - "Change"
    - "Modify"
    - "-"
    - "Minus"
    - "Rest"
    - "Subtract"
    - "Decrease"
    - "Decrement"
    - "Int"
    - "Integer"
    - "Float"
    - "Value"
    - "Decimal"
---

# Subtract Number

[Math](../index.md) / [Arithmetic](index.md) / **Subtract Number**

## Description

Decreases a numeric value by a given amount

## Parameters

| Name | Description |
| :--- | :---------- |
| Set | The value that is decremented |
| Value | The amount to decrement |

## Code

```cs
using System;
using UnityEngine;
using VisualScript.Icons;

namespace VisualScript.Runtime
{
    [Title("Subtract Number")]
    [Image(typeof(IconMinusCircle), ColorTheme.Type.Teal)]
    
    [Description("Decreases a numeric value by a given amount")]
    [Category("Math/Arithmetic/Subtract Number")]
    
    [Parameter("Set", "The value that is decremented")]
    [Parameter("Value", "The amount to decrement")]
    
    [Keywords("Set", "Change", "Modify", "-", "Minus", "Rest", "Subtract", "Decrease", "Decrement")]
    [Keywords("Int", "Integer", "Float", "Value", "Decimal")]
    
    [Serializable]
    public class InstructionCoreMathNumberSubtract : Instruction
    {
        [SerializeField] private SetNumber m_Set = new SetNumber();
        [SerializeField] private GetNumber m_Value = new GetNumber();

        protected override string GetTitle(GameObject source) => $"{this.m_Set} - {this.m_Value}";

        protected override Awaitable Run(Args args)
        {
            double current = this.m_Set.Get(args);
            double value = this.m_Value.Get(args);
            
            this.m_Set.Set(current - value, args);
            return Done;
        }
    }
}
```