how can i post formatted message to api create?

[winnie80]

I need to know how can I post formatted message to uvdesk api create. I tried to send message with full html tags, and all html tags were sanitized. I tried again using php htmlentities() htmlspecialchars(), converting html tags (limited to p, br and a) to ascii counterpart but it is also sanitized. Can you please help me? Thanks in advance