# d (dependent value) processing code

The d processing code defines the dependent
attribute in a control/dependent pair of correlated MultiValues; the
controlling attribute must contain a c code. The
attribute count specified in the attribute count parameter must contain
the c code and attribute count of the controlling
attribute. Note that this function belongs in attribute 4 of the item.

| System Processors | Select, Update, List |
| --- | --- |
| Code Type | Attribute Defining |
| Dictionary Attributes | Structure |

## Syntax

```
d;ac
```

## Parameter(s)

| ac | Specifies the attribute count of the controlling attribute. |
| --- | --- |

## Example(s)

In the example below, `order#` is the *controlling* attribute and controls
the values in attributes 4, 5, and 6. Each of these three controlled
attributes must indicate in their corresponding attribute-defining
items that they are dependent upon attribute 3.

```

id: order# quantity price ext.price
001 a a a a
002 3 4 5 6
003
004 c;4;5;6 d;3 d;3 d;3
```

## See also

- [c (controlling) processing code](https://d3codex.com/processingcodes/c-controlling-processing-code/)
- [output-conversion](https://d3codex.com/attributedefiningitem/output-conversion/)
- [Processing codes overview](https://d3codex.com/processingcodes/processing-codes-overview/)
- [Processing codes](https://d3codex.com/processingcodes/processing-codes/)

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Source: https://d3codex.com/processingcodes/d-dependent-value-processing-code/ - part of the D3Codex reference.