You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: icatb_dialogBox.m
    path of file: ./repos/bspm/thirdparty/MIALAB/GroupICATv4.0a/icatb
    
    the code of the file until where you have to start completion: function figHandle = icatb_dialogBox(varargin)
% Purpose: Dialog box for handling large text in Group ICA Toolbox. Inputs must be in pairs.
%
% Input:
% 1. 't
    
function callbacks %%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

function plotCallback(handleObj, evd, handles)

icatb_defaults;

global UI_FONTNAME;
global UI_FONTUNITS;
global UI_FS;
global FONT_COLOR;

% Plot callback
plotX = get(findobj(handles, 'tag', 'plot'), 'userdata');

x = plotX.x;

y = plotX.y;

if isfield(plotX, 'title')
    titleFig = plotX.title;
else
    titleFig = '';
end