diff --git a/TGPControls/TGPDiscreteSlider.swift b/TGPControls/TGPDiscreteSlider.swift
index a7ce8b2..32b13c1 100644
--- a/TGPControls/TGPDiscreteSlider.swift
+++ b/TGPControls/TGPDiscreteSlider.swift
@@ -128,18 +128,15 @@ public class TGPDiscreteSlider:TGPSlider_INTERFACE_BUILDER {
         }
     }
 
-    @IBInspectable public var thumbImage:String? = nil {
+    @IBInspectable public var thumbImage:UIImage? = nil {
         didSet {
-            // Associate image to layer NSBundle.bundleForClass(class)
-            if let imageName = thumbImage,
-                let image = UIImage(named: imageName) {
-                thumbLayer.contents = image.cgImage
+            if let thumbImage = thumbImage {
+                thumbLayer.contents = thumbImage.cgImage
             }
-
             layoutTrack()
         }
     }
-    
+
     @IBInspectable public var thumbShadowRadius:CGFloat = 0 {
         didSet {
             layoutTrack()
@@ -590,9 +587,8 @@ public class TGPDiscreteSlider:TGPSlider_INTERFACE_BUILDER {
                                 + (iOSThumbShadowOffset.height * 2))
 
         case .image:
-            if let thumbImage = thumbImage,
-                let image = UIImage(named: thumbImage) {
-                return image.size
+            if let thumbImage = thumbImage {
+                return thumbImage.size
             }
             fallthrough
 
diff --git a/TGPControlsDemo/TGPControlsDemo/Base.lproj/Main.storyboard b/TGPControlsDemo/TGPControlsDemo/Base.lproj/Main.storyboard
index 95456c8..e1ad42a 100755
--- a/TGPControlsDemo/TGPControlsDemo/Base.lproj/Main.storyboard
+++ b/TGPControlsDemo/TGPControlsDemo/Base.lproj/Main.storyboard
@@ -134,9 +134,9 @@
                                                     <userDefinedRuntimeAttribute type="number" keyPath="incrementValue">
                                                         <integer key="value" value="1"/>
                                                     </userDefinedRuntimeAttribute>
-                                                    <userDefinedRuntimeAttribute type="string" keyPath="thumbImage" value="thumb"/>
-                                                    <userDefinedRuntimeAttribute type="string" keyPath="tickImage" value="tick"/>
-                                                    <userDefinedRuntimeAttribute type="string" keyPath="trackImage" value="track"/>
+                                                    <userDefinedRuntimeAttribute type="image" keyPath="trackImage" value="track"/>
+                                                    <userDefinedRuntimeAttribute type="image" keyPath="tickImage" value="tick"/>
+                                                    <userDefinedRuntimeAttribute type="image" keyPath="thumbImage" value="thumb"/>
                                                 </userDefinedRuntimeAttributes>
                                             </view>
                                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Jca-ht-ahJ" userLabel="pictureLabels" customClass="TGPCamelLabels" customModule="TGPControls">
@@ -374,7 +374,7 @@
                                                         <color key="value" red="0.40000000600000002" green="0.80000001190000003" blue="1" alpha="0.5" colorSpace="custom" customColorSpace="sRGB"/>
                                                     </userDefinedRuntimeAttribute>
                                                     <userDefinedRuntimeAttribute type="number" keyPath="thumbShadowRadius">
-                                                        <real key="value" value="4"/>
+                                                        <real key="value" value="0.0"/>
                                                     </userDefinedRuntimeAttribute>
                                                     <userDefinedRuntimeAttribute type="size" keyPath="thumbShadowOffset">
                                                         <size key="value" width="0.0" height="0.0"/>
@@ -501,4 +501,9 @@
             <point key="canvasLocation" x="344.5" y="332.5"/>
         </scene>
     </scenes>
+    <resources>
+        <image name="thumb" width="11" height="11"/>
+        <image name="tick" width="2" height="7"/>
+        <image name="track" width="300" height="21"/>
+    </resources>
 </document>