> For the complete documentation index, see [llms.txt](https://docs.watchdata.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.watchdata.io/blockchain-apis/tron-api/tronz-shielded-smart-contract/createshieldedcontractparameters.md).

# CreateShieldedContractParameters

For detail, refer <https://github.com/tronprotocol/documentation-en/blob/master/docs/mechanism-algorithm/shielded-TRC20-contract.md>.

**Body params**:&#x20;

* `ovk`
* `from_amount`
* `to_amount`
* `transparent_to_address`
* `shielded_TRC20_contract_address`
* `shielded_receives`
* `shielded_spends`
* `ask`
* `nsk`

**Request**

```
curl --request POST \
     --url https://tron.api.watchdata.io/wallet/createshieldedcontractparameters \
     --header 'Accept: application/json' \
     --header 'Content-Type: application/json' \
     --data '
{
     "ovk": "string",
     "from_amount": "string",
     "to_amount": "string",
     "transparent_to_address": "string",
     "shielded_TRC20_contract_address": "string",
     "ask": "string",
     "nsk": "string"
}
'
```

**Response**&#x20;

```
{
  "Error": "class org.tron.core.services.http.JsonFormat$ParseException : 1:8: INVALID hex String"
}
```