hi do anyone know the syntax or command to set userdata mapping to a image displayed in subplots of a figure

            guys i am new to matlab.... i am doing a image based authentication coding.... i have a database of 40 images... i am using ms access database to store username, password, and image sequence path details for each user during registration, all are of text datatype.... 

            i now finished creating username and password authentication.... but after this authentication i want to implement image sequence authentication, where for every user images in database is displayed and user needs to select the images by mouse in sequence as he registered to pass final authentication...

            i am able to display the images in the subplots... now i want to use mouse to select the displayed images and in return i want a variable to store the file-path to reach the selected image..... 

            please help me with codes to select only 4 images displayed in subplots and state some variables to store those 4 images paths to reach them in database.... i will manage from here to store and verification... please help me

here is the code to reach my images

srcFiles = dir('C:\Users\Raki\Desktop\raki trials\database\*.jpg'); % the folder in which my images exists

n = length(srcFiles);

a = n/3;

X = zeros(1, n);

for i = 1 : n

    filename = strcat('C:\Users\Raki\Desktop\rakitrials\database\',srcFiles(i).name);

 [Xi,mapi] = imread(filename);

    plot=subplot(a,3,i);
    axisi=imshow(Xi,mapi);
   %g{i}=set(gca,'UserData',Xi);

%get(gca,'UserData') ;

end

Answer 1

[Walter Roberson]

set(gca,'UserData',filename)

[Rakesh]

sir can i get a logic to select subplots for only 4 times.... and each time the selected subplot information must be mapped to some variable in background... please help me with command sir...