diff --git a/cognito-forms.php b/cognito-forms.php
index 6ade6df..7a04bda 100644
--- a/cognito-forms.php
+++ b/cognito-forms.php
@@ -44,7 +44,8 @@ if ( !class_exists( 'CognitoFormsPlugin' ) ) {
 		private static $actions = array(
 			'admin_init',
 			'admin_menu',
-			'init'
+			'init',
+			'wp_ajax_cognito_tinymce_dialog'
 		);
 
 		// Supported shortcodes
@@ -182,6 +183,11 @@ if ( !class_exists( 'CognitoFormsPlugin' ) ) {
 			return $plugin_array;
 		}
 
+		public function wp_ajax_cognito_tinymce_dialog() {
+			include 'tinymce/dialog.php';
+			wp_die();
+		}
+
 		// Initialize administration menu (left sidebar)
 		public function admin_menu() {
 			add_menu_page( 'Cognito Forms', 'Cognito Forms', 'manage_options', 'Cognito', array( $this, 'main_page' ), "data:image/svg+xml;base64," . base64_encode( file_get_contents( plugin_dir_path( __FILE__ ) . 'cogicon.svg' ) ) );
diff --git a/tinymce/dialog.php b/tinymce/dialog.php
index 8c82a4e..2f2bb28 100644
--- a/tinymce/dialog.php
+++ b/tinymce/dialog.php
@@ -17,6 +17,8 @@
  */
 ?>
 
+<?php require_once dirname( __FILE__ ) . '/../api.php'; ?>
+
 <!DOCTYPE html>
 <html lang="en">
 <head>
@@ -29,6 +31,7 @@
 			margin: 0;
 			padding: 0;
 			height: 100%;
+			line-height: 0;
 		}
 		#cognito-frame {
 			width: 100%;
@@ -38,7 +41,7 @@
 	</style>
 </head>
 <body>
-	<iframe id="cognito-frame" src="https://forms.cognito.test/integrations/cms"></iframe>
+	<iframe id="cognito-frame" src="<?= CognitoAPI::$formsBase ?>/integrations/cms"></iframe>
 
 	<script type="text/javascript">
 		window.addEventListener('message', handleMessage);
@@ -48,7 +51,6 @@
 			var baseUrl = new URL(frame.getAttribute('src')).origin;
 
 			if (event.origin === baseUrl) {
-				console.log('Message received!');
 				sendData(event.data);
 			}
 		}
diff --git a/tinymce/plugin.js b/tinymce/plugin.js
index ef075eb..2d6c176 100755
--- a/tinymce/plugin.js
+++ b/tinymce/plugin.js
@@ -13,7 +13,7 @@
 			editor.addCommand( 'cognito_embed_window', function() {
 				editor.windowManager.open( {
 					title: 'Cognito Forms',
-					url: url + '/dialog.php',
+					url: ajaxurl + '?action=cognito_tinymce_dialog',
 					width: 500,
 					height: 500,
 				} );
