void setPickingStyle() throws ScriptException {
		checkLength34();
		boolean isMeasure = (statement[2].tok == Token.monitor);
		String str = null;
		Token token = statement[statementLength - 1];
		int tok = token.tok;
		switch (tok) {
		case Token.none:
		case Token.off:
			str = (isMeasure ? "measureoff" : "toggle");
			break;
		case Token.on:
			if (!isMeasure)
				invalidArgument();
			str = "measure";
			break;
		}
		try {
			if (str == null)
				str = (String) token.value;
		}
		catch (Exception e) {
			invalidArgument();
		}
		if (JmolConstants.GetPickingStyle(str) < 0)
			invalidArgument();
		viewer.setStringProperty("pickingStyle", str);
	}