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# CMTagMakeWithFloat64Value

Creates a new tag with a given category and a 64-bit floating point value.

```
extern CMTag CMTagMakeWithFloat64Value(CMTagCategory category, Float64 value);
```

## Parameters

`category`

The category of the new tag. For available categories, see Tag Category Constants.

`value`

The value of the new tag.

## Return Value

A new tag with the assigned category containing a 64-bit floating point number, or [`kCMTagInvalid`](/documentation/CoreMedia/kCMTagInvalid) if no tag could be created.

---

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