# block_height · FT4 Rell API · Chromia Docs (concept)

> function block_ height(integer: integer): rule_parameters See Also core.accounts.block_height

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.auth/block_height/

FUNCTION

# block\_height

```signature
function block_height(integer: integer): rule_parameters
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/core/auth/login.rell#lines-240)

**See Also**

* `core.accounts.block_height`

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-rell/-f-t4%20-library/lib.ft4.core.auth/block_height.html)Generated API reference, mirrored from the live docs