- You haven't chosen the correct COM port (not COM1) via the Tools menu.
- You forgot the ; at the end of each command.
- You haven't kept track of how many
{
you opened and how many }
you closed. - Check the editor's colour coding - eg recognised commands will appear in orange.
- Try to use indents - when you write a { on one line, start the next line with an extra tab or 4 spaces, then when you use a } start the next line with one fewer tab or 4 fewer spaces. It will make your code more readable.