SAP S/4 HANA Integration via ZOHO Flow

SAP S/4 HANA Integration via ZOHO Flow

Hi

How do I change the SAP Client ID while creating a new connection ?
MY  client ID is 421. 

I believe the client id should be an input field for length 3 numbers rather then a drop down to select from a fixed set of values.

Thanks

    Nederlandse Hulpbronnen