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

> function is_ value_ allowed(value: byte_ array, allowlist: allowlist ): boolean Utility function which returns whether a value is allowed by a certain allo

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.accounts.strategies.transfer/is_value_allowed/

FUNCTION

# is\_value\_allowed

```signature
function is_value_allowed(value: byte_array, allowlist: allowlist): boolean
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/core/accounts/strategies/transfer/config.rell#lines-9)

Utility function which returns whether a value is allowed by a certain `allowlist`.
This means the `allowlist` is either set to allow all values, or the value is specified
in the list of allowed values.

**Parameters**

* **value** — the value to check
* **allowlist** — the allowlist

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