Is there any way to configure EmEditor to recognise a comment that starts with a specific character in the first position on a line and then continues to a specific end character?

In my case a comment always starts with a 'C' in column 1 and end with the next '$' character and can be on a single line or multiple lines.

If I use a 'C' in the Highlight (2) dialog it will also trigger on a 'C' that lies in the middle of a line.