## Description

The Math & Logic value converters enable you to perform basic mathematical and logical operations on numbers or boolean values. Each available converter is defined below.

## Converters

### Not

The **Not** converter will invert a boolean value:

- a
**True**value becomes**False** - a
**False**value becomes**True**

You can use this converter with properties like the **Visibility** of any asset or **Is Checked** of a Toggle Button.

In the sample below:

**Image 1 / Visibility**is bound to**Toggle Button / Is Checked****Image 2 / Visibility**is bound to**Toggle Button / Is Checked**with a**Not Converter**

### Add

The **Add** converter will add a number to the binding source value .

In the sample below:

- The
**X**property of Image 2 is bound to the**X**property of Image 1. - An
**Add**converter with a value of 150 creates a vertical offset between the two images.

### Subtract

The **Subtract** converter will subtract a number from the binding input value.

In the sample below:

- The
**Y**property of Image 2 is bound to the**Y**property of Image 1. - A
**Subtract**converter with a**value**of 150 creates a vertical offset between the two images.

### Multiply

The **Multiply** converter will multiply the binding input value by a specified number.

### Divide

The **Divide** converter will divide the binding input value by a specified number.

We use this **Divide** converter in the **Visual Effects** design accelerator bundle to create a parallax effect. See below for more details.

### Absolute

The **Absolute** converter will return the absolute value of the binding input value.

### Is Equal To

The **Is Equal To** converter compares the binding input value with a specified number. If they match, the value of this converter is "True", otherwise it is "False".

## Usage Sample

- Use the
**Divide**Converter to easily create a**parallax**effect. Bind an image's**X**property to another image's**X**property, using the Converter to divide the original value by**2**. The second image will move**twice**as slow as the first one. You can download the**Visual Effects**Design Accelerator to see how it works live in Composer.

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