diff --git a/v2/internal/ffenestri/ffenestri.go b/v2/internal/ffenestri/ffenestri.go
index 66900445..2401d8ce 100644
--- a/v2/internal/ffenestri/ffenestri.go
+++ b/v2/internal/ffenestri/ffenestri.go
@@ -29,33 +29,6 @@ import "C"
 // TODO: move to compile time.
 var DEBUG bool = true
 
-// // Config defines how our application should be configured
-// type Config struct {
-// 	Title       string
-// 	Width       int
-// 	Height      int
-// 	MinWidth    int
-// 	MinHeight   int
-// 	MaxWidth    int
-// 	MaxHeight   int
-// 	DevTools    bool
-// 	Resizable   bool
-// 	Fullscreen  bool
-// 	Frameless   bool
-// 	StartHidden bool
-// }
-
-// var defaultConfig = &Config{
-// 	Title:       "My Wails App",
-// 	Width:       800,
-// 	Height:      600,
-// 	DevTools:    true,
-// 	Resizable:   true,
-// 	Fullscreen:  false,
-// 	Frameless:   false,
-// 	StartHidden: false,
-// }
-
 // Application is our main application object
 type Application struct {
 	config *options.App
diff --git a/v2/internal/ffenestri/ffenestri_client.go b/v2/internal/ffenestri/ffenestri_client.go
index 98a3ea23..5c4de82c 100644
--- a/v2/internal/ffenestri/ffenestri_client.go
+++ b/v2/internal/ffenestri/ffenestri_client.go
@@ -19,6 +19,7 @@ import (
 	"unsafe"
 
 	"github.com/wailsapp/wails/v2/internal/logger"
+	"github.com/wailsapp/wails/v2/pkg/options"
 )
 
 // Client is our implentation of messageDispatcher.Client
@@ -123,11 +124,11 @@ func (c *Client) WindowSetColour(colour int) {
 }
 
 // OpenDialog will open a dialog with the given title and filter
-func (c *Client) OpenDialog(title string, filter string) []string {
+func (c *Client) OpenDialog(dialogOptions *options.OpenDialog) []string {
 
 	var result []string
 
-	cstring := C.OpenDialog(c.app.app, c.app.string2CString(title), c.app.string2CString(filter))
+	cstring := C.OpenDialog(c.app.app, c.app.string2CString(dialogOptions.Title), c.app.string2CString(dialogOptions.Filter))
 	if cstring == nil {
 		return result
 	}
diff --git a/v2/internal/messagedispatcher/dispatchclient.go b/v2/internal/messagedispatcher/dispatchclient.go
index 4f6ae886..8dcbf692 100644
--- a/v2/internal/messagedispatcher/dispatchclient.go
+++ b/v2/internal/messagedispatcher/dispatchclient.go
@@ -6,6 +6,7 @@ import (
 	"github.com/wailsapp/wails/v2/internal/logger"
 	"github.com/wailsapp/wails/v2/internal/messagedispatcher/message"
 	"github.com/wailsapp/wails/v2/internal/servicebus"
+	"github.com/wailsapp/wails/v2/pkg/options"
 )
 
 // Client defines what a frontend client can do
@@ -13,7 +14,7 @@ type Client interface {
 	Quit()
 	NotifyEvent(message string)
 	CallResult(message string)
-	OpenDialog(title string, filter string) []string
+	OpenDialog(*options.OpenDialog) []string
 	WindowSetTitle(title string)
 	WindowShow()
 	WindowHide()
diff --git a/v2/internal/messagedispatcher/messagedispatcher.go b/v2/internal/messagedispatcher/messagedispatcher.go
index 54d2e24d..0c034be6 100644
--- a/v2/internal/messagedispatcher/messagedispatcher.go
+++ b/v2/internal/messagedispatcher/messagedispatcher.go
@@ -10,6 +10,7 @@ import (
 	"github.com/wailsapp/wails/v2/internal/logger"
 	"github.com/wailsapp/wails/v2/internal/messagedispatcher/message"
 	"github.com/wailsapp/wails/v2/internal/servicebus"
+	"github.com/wailsapp/wails/v2/pkg/options"
 )
 
 // Dispatcher translates messages received from the frontend
@@ -317,7 +318,6 @@ func (d *Dispatcher) processWindowMessage(result *servicebus.Message) {
 // processDialogMessage processes dialog messages
 func (d *Dispatcher) processDialogMessage(result *servicebus.Message) {
 	splitTopic := strings.Split(result.Topic(), ":")
-
 	if len(splitTopic) < 4 {
 		d.logger.Error("Invalid dialog message : %#v", result.Data())
 		return
@@ -327,25 +327,23 @@ func (d *Dispatcher) processDialogMessage(result *servicebus.Message) {
 	switch command {
 	case "select":
 		dialogType := splitTopic[2]
-		title := splitTopic[3]
-		filter := ""
-		if len(splitTopic) > 4 {
-			filter = splitTopic[4]
-		}
 		switch dialogType {
 		case "open":
-			responseTopic, ok := result.Data().(string)
+			dialogOptions, ok := result.Data().(*options.OpenDialog)
 			if !ok {
-				d.logger.Error("Invalid responseTopic for 'dialog:select:open' : %#v", result.Data())
+				d.logger.Error("Invalid data for 'dialog:select:open' : %#v", result.Data())
 				return
 			}
+			// This is hardcoded in the sender too
+			responseTopic := "dialog:openselected:" + splitTopic[3]
+
 			d.logger.Info("Opening File dialog! responseTopic = %s", responseTopic)
 
 			// TODO: Work out what we mean in a multi window environment...
 			// For now we will just pick the first one
 			var result []string
 			for _, client := range d.clients {
-				result = client.frontend.OpenDialog(title, filter)
+				result = client.frontend.OpenDialog(dialogOptions)
 			}
 
 			// Send dummy response
diff --git a/v2/internal/runtime/goruntime/dialog.go b/v2/internal/runtime/goruntime/dialog.go
index 2d46b41b..1e7a74a6 100644
--- a/v2/internal/runtime/goruntime/dialog.go
+++ b/v2/internal/runtime/goruntime/dialog.go
@@ -1,15 +1,18 @@
 package goruntime
 
 import (
+	b64 "encoding/base64"
+	"encoding/json"
 	"fmt"
 
 	"github.com/wailsapp/wails/v2/internal/crypto"
 	"github.com/wailsapp/wails/v2/internal/servicebus"
+	"github.com/wailsapp/wails/v2/pkg/options"
 )
 
 // Dialog defines all Dialog related operations
 type Dialog interface {
-	OpenDialog(params ...string) []string
+	Open(dialogOptions *options.OpenDialog) []string
 }
 
 // dialog exposes the Dialog interface
@@ -41,11 +44,8 @@ func (r *dialog) processTitleAndFilter(params ...string) (string, string) {
 	return title, filter
 }
 
-// OpenDialog prompts the user to select a file
-func (r *dialog) OpenDialog(params ...string) []string {
-
-	// Extract title + filter
-	title, filter := r.processTitleAndFilter(params...)
+// Open prompts the user to select a file
+func (r *dialog) Open(dialogOptions *options.OpenDialog) []string {
 
 	// Create unique dialog callback
 	uniqueCallback := crypto.RandomID()
@@ -57,12 +57,8 @@ func (r *dialog) OpenDialog(params ...string) []string {
 		fmt.Printf("ERROR: Cannot subscribe to bus topic: %+v\n", err.Error())
 	}
 
-	// Publish dialog request
-	message := "dialog:select:open:" + title
-	if filter != "" {
-		message += ":" + filter
-	}
-	r.bus.Publish(message, responseTopic)
+	message := "dialog:select:open:" + uniqueCallback
+	r.bus.Publish(message, dialogOptions)
 
 	// Wait for result
 	var result *servicebus.Message = <-dialogResponseChannel
@@ -72,3 +68,13 @@ func (r *dialog) OpenDialog(params ...string) []string {
 
 	return result.Data().([]string)
 }
+
+func optionsToBase64(dialogOptions *options.OpenDialog) (string, error) {
+
+	encoded, err := json.Marshal(dialogOptions)
+	if err != nil {
+		return "", err
+	}
+
+	return b64.StdEncoding.EncodeToString(encoded), nil
+}
diff --git a/v2/pkg/options/dialog.go b/v2/pkg/options/dialog.go
new file mode 100644
index 00000000..609f67e5
--- /dev/null
+++ b/v2/pkg/options/dialog.go
@@ -0,0 +1,9 @@
+package options
+
+// OpenDialog contains the options for the OpenDialog runtime method
+type OpenDialog struct {
+	Title            string
+	Filter           string
+	AllowFiles       bool
+	AllowDirectories bool
+}
diff --git a/v2/test/runtime/runtime.go b/v2/test/runtime/runtime.go
index 9062e41a..ed4d972e 100644
--- a/v2/test/runtime/runtime.go
+++ b/v2/test/runtime/runtime.go
@@ -4,6 +4,7 @@ import (
 	"time"
 
 	wails "github.com/wailsapp/wails/v2"
+	"github.com/wailsapp/wails/v2/pkg/options"
 )
 
 // RuntimeTest to test the runtimes
@@ -68,7 +69,11 @@ func (r *RuntimeTest) SetColour(colour int) {
 
 // OpenDialog will call the Runtime.Dialog.OpenDirectory method
 func (r *RuntimeTest) OpenDialog(title string, filter string) []string {
-	return r.runtime.Dialog.OpenDialog(title, filter)
+	dialogOptions := &options.OpenDialog{
+		Title:  title,
+		Filter: filter,
+	}
+	return r.runtime.Dialog.Open(dialogOptions)
 }
 
 // HideWindow will call the Runtime.Window.Hide method and then call