diff --git a/example/aframe/sandbox/index.html b/example/aframe/sandbox/index.html
index 3135b0f..4a1b61d 100644
--- a/example/aframe/sandbox/index.html
+++ b/example/aframe/sandbox/index.html
@@ -21,7 +21,7 @@
     </div>
     <a class="btn-foot" id="source" target="_blank" href="https://github.com/coderofsalvation/xrfragment-helloworld">➕ clone project</a> 
     <a class="btn-foot" id="embed" target="_blank" onclick="embed()">📺 embed</a> 
-    <a class="btn-foot" id="model" target="_blank" href="">⬇️ model</a> 
+    <a class="btn-foot" id="model" target="_blank" href="example.gltf">⬇️ model</a> 
     <textarea style="display:none"></textarea>
     <a-scene light="defaultLightsEnabled: false">
       <a-entity id="player" wasd-controls look-controls>
@@ -66,6 +66,7 @@
             const isExtern  = url[0] != '#'
             const notIsHome = url != $('#home').getAttribute("xrf") 
             const promise   = e.promise() // promisify event
+            document.querySelector('#model').setAttribute('href',url.replace(/.*\?/,'') )
             if( !renderer.xr.isPresenting ){
               if( isExtern && notIsHome ){
                 if( !confirm("teleport to "+url+" ?") ) return promise.reject('teleport rejected')
diff --git a/example/threejs/sandbox/index.html b/example/threejs/sandbox/index.html
index 74782a9..c6fb178 100644
--- a/example/threejs/sandbox/index.html
+++ b/example/threejs/sandbox/index.html
@@ -15,7 +15,7 @@
     </div>
     <a class="btn-foot" id="source" target="_blank" href="https://github.com/coderofsalvation/xrfragment-helloworld">➕ clone project</a> 
     <a class="btn-foot" id="embed" target="_blank" onclick="embed()">📺 embed</a> 
-    <a class="btn-foot" id="model" target="_blank" href="">⬇️ model</a> 
+    <a class="btn-foot" id="model" target="_blank" href="example.gltf">⬇️ model</a> 
 		<textarea style="display:none"></textarea>
 		
 		<script async src="./../../assets/js/alpine.min.js"></script>
@@ -126,7 +126,19 @@
         window.XRF = XRF // expose to form
 
 				let file = document.location.search.length > 2 ? document.location.search.substr(1) + document.location.hash : 'example.gltf#pos=1,0,4&rot=0,-30,0'
-        $('#model').setAttribute("href","./../../asset/"+file)
+
+        // optional decoration of href event        
+        XRF.addEventListener('href',(e) => {
+          if( e.click ){
+            const { mesh, model, camera, scene, renderer, THREE} = e.XRF
+            const url       = e.xrf.string
+            const isExtern  = url[0] != '#'
+            const promise   = e.promise() // promisify event
+            document.querySelector('#model').setAttribute('href',url.replace(/.*\?/,'') )
+            promise.resolve()
+          }
+        })
+
 				XRF.navigator.to( file )