> For the complete documentation index, see [llms.txt](https://docs.sannybuilder.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sannybuilder.com/troubleshooting/errors/0021.md).

# 0021: Incorrect variable name

The compiler expects an integer number for [local variable](/language/data-types/variables.md#local-variables) names.

**Possible solutions:** use a valid integer number that meets the local variables [limit](/scm-documentation/gta-limits.md) for this game:

```
var@s = 'test' // incorrect
0@s = 'test' // correct
```