Problem with setmultiplemotors command

I have written some code on my laptop at home and taken it into school on a memory stick, when I open it I get a compile error with the setmultiplemotors command. Both versions of RobotC are the same and I am confused as to the reason why. I need the code to work on the school laptop as this is the one we need to use for the competition. Any help gratefully recieved

Make sure you have “Natural language” enabled on the school laptop, setmultiplemotors is a natural language command.