diff --git a/module/dca/tl_leaflet_marker.php b/module/dca/tl_leaflet_marker.php
index 1597576..0b406df 100644
--- a/module/dca/tl_leaflet_marker.php
+++ b/module/dca/tl_leaflet_marker.php
@@ -116,6 +116,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_marker'] = array
                 'riseOffset',
                 'customIcon',
             ),
+            'expert'  => array(':hide', 'featureData'),
             'active'  => array('active', 'ignoreForBounds')
         ),
     ),
@@ -295,5 +296,17 @@ $GLOBALS['TL_DCA']['tl_leaflet_marker'] = array
             'eval'      => array('tl_class' => 'w50'),
             'sql'       => "char(1) NOT NULL default ''"
         ),
+        'featureData'  => array
+        (
+            'label'     => &$GLOBALS['TL_LANG']['tl_leaflet_layer']['featureData'],
+            'exclude'   => true,
+            'inputType' => 'textarea',
+            'eval' => array('tl_class'  => 'clr lng',
+                            'allowHtml' => true,
+                            'style'     => 'min-height: 40px;',
+                            'rte'       => 'ace|json'
+            ),
+            'sql'       => "text NULL"
+        ),
     ),
 );
diff --git a/module/dca/tl_leaflet_vector.php b/module/dca/tl_leaflet_vector.php
index 0087082..479d5fd 100644
--- a/module/dca/tl_leaflet_vector.php
+++ b/module/dca/tl_leaflet_vector.php
@@ -119,6 +119,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_vector'] = array
             'data'   => array(),
             'popup'  => array(':hide','addPopup'),
             'config' => array(':hide', 'style', 'className', 'clickable'),
+            'expert' => array(':hide', 'featureData'),
             'active' => array('active', 'ignoreForBounds')
         ),
 
@@ -357,5 +358,17 @@ $GLOBALS['TL_DCA']['tl_leaflet_vector'] = array
             'eval'      => array('tl_class' => 'w50'),
             'sql'       => "char(1) NOT NULL default ''"
         ),
+        'featureData'  => array
+        (
+            'label'     => &$GLOBALS['TL_LANG']['tl_leaflet_vector']['featureData'],
+            'exclude'   => true,
+            'inputType' => 'textarea',
+            'eval' => array('tl_class'  => 'clr lng',
+                            'allowHtml' => true,
+                            'style'     => 'min-height: 40px;',
+                            'rte'       => 'ace|json'
+            ),
+            'sql'       => "text NULL"
+        ),
     ),
 );
diff --git a/module/languages/en/tl_leaflet_marker.php b/module/languages/en/tl_leaflet_marker.php
index 92dbb8c..7303aec 100644
--- a/module/languages/en/tl_leaflet_marker.php
+++ b/module/languages/en/tl_leaflet_marker.php
@@ -4,6 +4,8 @@ $GLOBALS['TL_LANG']['tl_leaflet_marker']['title_legend']   = 'Title and type';
 $GLOBALS['TL_LANG']['tl_leaflet_marker']['content_legend'] = 'Content';
 $GLOBALS['TL_LANG']['tl_leaflet_marker']['config_legend']  = 'Configuration';
 $GLOBALS['TL_LANG']['tl_leaflet_marker']['active_legend']  = 'Activation';
+$GLOBALS['TL_LANG']['tl_leaflet_marker']['expert_legend']      = 'Expert settings';
+
 
 $GLOBALS['TL_LANG']['tl_leaflet_marker']['new'][0]    = 'Create marker';
 $GLOBALS['TL_LANG']['tl_leaflet_marker']['new'][1]    = 'Create new marker';
@@ -50,3 +52,5 @@ $GLOBALS['TL_LANG']['tl_leaflet_marker']['active'][0]          = 'Activate marke
 $GLOBALS['TL_LANG']['tl_leaflet_marker']['active'][1]          = 'Only activated markers are rendered on the map.';
 $GLOBALS['TL_LANG']['tl_leaflet_marker']['ignoreForBounds'][0] = 'Exclude from bounds';
 $GLOBALS['TL_LANG']['tl_leaflet_marker']['ignoreForBounds'][1] = 'Do not include this item in the bounds calculation.';
+$GLOBALS['TL_LANG']['tl_leaflet_marker']['featureData'][0]     = 'Feature data';
+$GLOBALS['TL_LANG']['tl_leaflet_marker']['featureData'][1]     = 'The marker is transferred as GeoJSON feature. These data is passed as <em>feature.properties.data</em>.';
diff --git a/module/languages/en/tl_leaflet_vector.php b/module/languages/en/tl_leaflet_vector.php
index 7108a9e..b311aaa 100644
--- a/module/languages/en/tl_leaflet_vector.php
+++ b/module/languages/en/tl_leaflet_vector.php
@@ -5,6 +5,8 @@ $GLOBALS['TL_LANG']['tl_leaflet_vector']['active_legend'] = 'Activation';
 $GLOBALS['TL_LANG']['tl_leaflet_vector']['config_legend'] = 'Configuration';
 $GLOBALS['TL_LANG']['tl_leaflet_vector']['data_legend']   = 'Vector data';
 $GLOBALS['TL_LANG']['tl_leaflet_vector']['popup_legend']  = 'Popup';
+$GLOBALS['TL_LANG']['tl_leaflet_vector']['expert_legend']      = 'Expert settings';
+
 
 $GLOBALS['TL_LANG']['tl_leaflet_vector']['new'][0]    = 'Create vector';
 $GLOBALS['TL_LANG']['tl_leaflet_vector']['new'][1]    = 'Create new vector';
@@ -55,3 +57,5 @@ $GLOBALS['TL_LANG']['tl_leaflet_vector']['style'][0]           = 'Style';
 $GLOBALS['TL_LANG']['tl_leaflet_vector']['style'][1]           = 'Choose a style. If none defined, the default style of leaflet is used.';
 $GLOBALS['TL_LANG']['tl_leaflet_vector']['ignoreForBounds'][0] = 'Exclude from bounds';
 $GLOBALS['TL_LANG']['tl_leaflet_vector']['ignoreForBounds'][1] = 'Do not include this item in the bounds calculation.';
+$GLOBALS['TL_LANG']['tl_leaflet_vector']['featureData'][0]     = 'Feature data';
+$GLOBALS['TL_LANG']['tl_leaflet_vector']['featureData'][1]     = 'The marker is transferred as GeoJSON feature. These data is passed as <em>feature.properties.data</em>.';