Analyzing Historical Twitter data for Keywords by Date

Hello Matlab Team!

I am trying to write a script which lets me search historical tweets for specific keywords between two dates. I can't seem to get the pull past the current date. Below is my code thus far. It is not much since I am not sure how to proceed from here. I feel as if there is a simple solution but I have not found a solution via almighty Google.

I used twitty (<http://www.mathworks.com/matlabcentral/fileexchange/34837-twitty>) and json parsor (<http://www.mathworks.com/matlabcentral/fileexchange/20565-json-parser>) to get this far FYI.

Any help would be greatly appreciated!

clear;

% Store Credentials - I masked mine btw
creds = struct('ConsumerKey','---',...
    'ConsumerSecret','---',...
    'AccessToken','---',...
    'AccessTokenSecret','---');

% set up a twitty object
 addpath twitty_1.1.1; % Twitty
 addpath parse_json; % Twitty's default json parser
 addpath jsonlab; % I prefer JSONlab, however.
 tw = twitty(creds); % instantiate a Twitty object
 tw.jsonParser = @loadjson; % specify JSONlab as json parser

% search for English tweets that mention 'matlab'
S = tw.search('matlab');