Your command has too many characters. A Debugger command can include no more than 256 characters. If you are specifying an ALIAS, BREAK, or TRACE command that includes many command lines within braces, you might consider using nested aliases. You can cause a function key or a short string to stand for hundreds of keystrokes by specifying it as the alias of a list of aliases, each of which represents fewer than 256 characters. Another alternative is to use READ commands, rather than aliases, to enter multiple commands.