isnumber ( ‘;’ STRING )*
Description: static String _isnumber = "${isnumber[;<target>...]}";

- Supported by OSGi enRoute

- # isnumber ( ';' STRING )*

      static String	_isnumber	= "${isnumber[;<target>...]}";

      public boolean _isnumber(String args[]) throws Exception {
      	verifyCommand(args, _isnumber, null, 2, Integer.MAX_VALUE);

      	for (int i = 1; i < args.length; i++)
      		if (!NUMERIC_P.matcher(args[i]).matches())
      			return false;

      	return true;
      }