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# Exists

Returns `False` when the databox value is empty or blank, and `True` when it holds anything at all.

| Expression | Databox value         | Result  |
| ---------- | --------------------- | ------- |
| `Exists`   | `The quick brown fox` | `True`  |
| `Exists`   | `0`                   | `True`  |
| `Exists`   | `1`                   | `True`  |
| `Exists`   | (empty)               | `False` |

Note that `0` exists. `Exists` asks whether there is a value, not whether the value means anything.

Use it to drive a condition — see [Logical expressions](/reference/expression-reference/logical-expressions.md).