Im trying to create a bundle for GAMS and when wanting to do syntax highlighting i have an issue. Several of the commands in GAMS starts with a $ sign, e.g. $INCLUDE, so how do i get the editor to recognize this? I've tried doing the litteral \$ but it wont recognize it in my syntax. 

                { name = 'keyword'; 
                        match = '^\b((?i)(\$INCLUDE))\b'; 
                } 

What am i doing wrong?