RTE options in Assets Metadata Schema

Hi All,

We have a requirement to have Asset metadata Schema added with a RichText component with following features as one of the property fields:

• Special characters
• Superscript and Subscript
• Spell checker
• Source Edit

http://localhost:4502/mnt/overlay/dam/gui/content/metadataschemaeditor/schemalist.html?formPath=/conf/global/settings/dam/adminui-extension/metadataschema

But, RTE functionality is not available in OOTB Metadata Schema. So we tried the following method to add RTE to metadata schema but found that the above functionalities are not available in that RTE.

Experiencing Adobe Experience Manager - Day CQ: AEM 62 - Touch UI Rich Text (RTE) in Asset Metadata Editor

Is it possible to add RTE with above features to Assets metadata schema?

Note: We are using AEM 6.4.2.

Thank you,

Raam Akella