I cant try Data Type to the Custom Fields

I cant try Data Type to the Custom Fields

Hello friends,

I cant see the option to change data type to the custom fields i was created in estimate and in invoices.

Only put Custom Field like Text Box i want more options.

In the FAQ of invoice see can try the data type in the fields but i dont see.

Maybe is a perform for payment accounts ? i Actually have 2 acc in zoho CRM

Thanks for the support