How add line in Context Area for Account Info Block

Hi, I wish to find a way to display 3 lines in the context area, In the standard component iccmp_hdr_cntnt/AccountWindow you can only display 2 messages; these are filled by the CustomController IUICMD/CuCoMD (method FILL_CALLER_DISPLAY).

Have you any suggestion ?

For Information, I already try put some HTML code in the second message, but any 3th line is displayed.

Thanks for your help.

Regards David Méloux