# Increasing/Decreasing a Value

Every time the Switch is touched, a positive constant will be added or subtracted to the current value of the specified variable.

## Example Operation

## Setting Workflow

1. Add Variables
2. Set up Parts

## Add Variables

### Project Explorer : [Variables] ➞ [All Variables]

Add the below variable(s).

#### Variables property:

[Name] | [Data Type]
Var1 | [WORD]

## Set up Parts

### Project Explorer : [Screen Design] ➞ [Screens] ➞ [Screen1]

Drag and drop the following objects from the [Tool Chest] to the screen.

#### Switch object (Name: Switch1) properties:

Tab | Sub Tab | Property | Value
[Function] | [Touch] | [Operation] | [Type] | [Word]
[Operation] | [Add]
[Source] | 1
[Destination] | [Variable] [Name]: Var1

#### Switch object (Name: Switch2) properties:

Tab | Sub Tab | Property | Value
[Function] | [Touch] | [Operation] | [Type] | [Word]
[Operation] | [Subtract]
[Source] | 1
[Destination] | [Variable] [Name]: Var1