Content Type / contentType Possible for Reply When Performing a Blueprint Transition

Content Type / contentType Possible for Reply When Performing a Blueprint Transition

Hi,

I was wondering what were the possible "contentType" possible for the "reply" of a blueprint transition.

I have tried using "html" as a value, but it said that it was unsupported. I was wondering if there are any other supported values or is plainText the only one?

https://desk.zoho.com/DeskAPIDocument#Blueprints#Blueprints_Performtransition