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

> operation test_ optional_ params(amount: integer, to: text) 

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/tests.operations/test_optional_params/

OPERATION

# test\_optional\_params

```signature
operation test_optional_params(amount: integer, to: text)
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/tests/operations/module.rell#lines-74)

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