UI Format and passing input

Ok so here is the tool that I am building with this UI.....

/*       Start of panel building script       */
try {
    var gui = createGUI();
    gui.show();
} catch (e) {
    alert(e);
}
function createGUI() {
    var gui = new Window("dialog", "CMYK Correction Tool");
    gui.alignChilren = ["fill", "fill"];
    gui.orientation = "column";
    var panelGroup = createGroup(gui, "row");
    // Wrong CMYK  
    var wrongPanel = createPanel(panelGroup, "Wrong CMYK Values");
    var wrongCyan = createTextField(wrongPanel, "Cyan Value:", "");
    var wrongMagenta = createTextField(wrongPanel, "Magenta Value:", "");
    var wrongYellow = createTextField(wrongPanel, "Yellow Value:", "");
    var wrongBlack = createTextField(wrongPanel, "Black Value:", "");
    // Right CMYK  
    var rightPanel = createPanel(panelGroup, "Right CMYK Values");
    var rightCyan = createTextField(rightPanel, "Cyan Value:", "");
    var rightMagenta = createTextField(rightPanel, "Magenta Value:", "");
    var rightYellow = createTextField(rightPanel, "Yellow Value:", "");
    var rightBlack = createTextField(rightPanel, "Black Value:", "");
    var buttons = createGroup(gui, "row");
    // Confirm button
    var confirmBtn = createButton(buttons, "Confirm", function() {
        try {
            gui.close();
            /*       Start of batch processing script       */
            // Counter for how many changes were made
            var changesMade = 0;
            // Select folder that contains your files
            var dir = Folder.selectDialog("Select your file directory...");
            /* 
            If directory is selected continue the script.
            If cancel button is clicked go to else statement. 
            */
            if (dir != null) {
                // Only look for files with the .ai extension and collect them
                var files = dir.getFiles("*.ai");
                if (files.length > 0) {
                    // Loop through all the collected .ai files
                    for (var i = 0; i < files.length; i++) {
                        //alert(files.length);
                        // Open the document in Illustrator
                        var doc = app.open(files);
                        // Collect all of the open document pathItems
                        var allPaths = doc.pathItems;
                        // Loop through all of the open document pathItems
                        for (var z = 0; z < allPaths.length; z++) {
                            // Only look for a specific CMYK fillColor
                            if (Math.round(allPaths.fillColor.cyan) == getText(wrongCyan) &&
                                Math.round(allPaths.fillColor.magenta) == getText(wrongMagenta) &&
                                Math.round(allPaths.fillColor.yellow) == getText(wrongYellow) &&
                                Math.round(allPaths.fillColor.black) == getText(wrongBlack)) {
                                // Change the fillColor properties
                                allPaths.fillColor.cyan = getText(rightCyan);
                                allPaths.fillColor.magenta = getText(rightMagenta);
                                allPaths.fillColor.yellow = getText(rightYellow);
                                allPaths.fillColor.black = getText(rightBlack);
                                changesMade++;
                                doc.save();
                            }
                        }
                        // Close the document and save the changes
                        //doc.close(SaveOptions.SAVECHANGES);
                        doc.close();
                    }
                    alert(changesMade + " color changes were made.");
                } else {
                    alert('This folder doesn\'t contain any Adobe Illustrator files');
                }
            }
            // Cancel button was selected
            else {
                alert("Script cancelled. \nHave a nice day! :-)");
            }
            // End batch
        } catch (e) {
            alert(e);
        }
    });
    // Cancel Button
    var cancelBtn = createButton(buttons, "Cancel", function() {
        gui.close();
    });
    return gui;
}
// Function to collect user input
function getText(field) {
    return field.text !== undefined ? field.text : "";
}
// Function to build panel
function createPanel(parent, title) {
    // Create Panel  
    var panel = parent.add("panel", undefined, title);
    panel.orientation = "column";
    // Return panel  
    return panel;
}
// Function to create button
function createButton(parent, title, onClick) {
    // Create Button  
    var button = parent.add("button", undefined, title);
    if (onClick !== undefined) button.onClick = onClick;
    // Return button  
    return button;
}
// Function to create field in panel
function createTextField(parent, title, content) {
    // Create a group for title and field  
    var group = createGroup(parent, "column");
    group.alignChildren = 'left';
    // Create title  
    var title = group.add("statictext", undefined, title);
    var field = group.add("edittext", undefined, content);
    field.preferredSize = [200, 23];
    // Return the field as its all you'll use  
    return field;
}
// Function to organize the panel layout
function createGroup(parent, orientation) {
    // Create Group  
    var group = parent.add("group");
    group.orientation = orientation;
    // Return Group  
    return group;
}

Any chance itsBenMason​  you can tell me how to make this loop through all sub-directories as well?... not just the selected folder.

Try the new updated version i amended my post.

the issue is on Row 10 of the original code i posted, missed that one! (change w.wrongGroup.add() to wrongPanel.add()).

Though ucan amend that, id recommend using my new improved version so you only need to change 1 thing to change all your text fields and such so much easier to maintain