diff --git a/ng-app/src/apps/SparqlUpdateEditor.svelte b/ng-app/src/apps/SparqlUpdateEditor.svelte
index b42eb72..6210dfa 100644
--- a/ng-app/src/apps/SparqlUpdateEditor.svelte
+++ b/ng-app/src/apps/SparqlUpdateEditor.svelte
@@ -13,11 +13,14 @@
     import { onMount, tick, onDestroy } from "svelte";
     import { 
       sparql_update,
+      toast_error,
+      toast_success
     } from "../store";
     import { 
-      in_memory_discrete, cur_tab
+      in_memory_discrete, open_viewer
     } from "../tab";
-    import{  RocketLaunch } from "svelte-heros-v2";
+    import{ Sun, RocketLaunch } from "svelte-heros-v2";
+    import { t } from "svelte-i18n";
 
     import { Button, Progressbar, Spinner, Alert } from "flowbite-svelte";
     
@@ -35,27 +38,38 @@
         }
     });
     const run = async () => {
+      try{
         await sparql_update($in_memory_discrete);
+        toast_success($t("app.sparql_update_editor.success"));
+      } catch(e) {
+        toast_error(e);
+      }
     }
   
   </script>
   <div class="flex-col">
     
-    <CodeMirror bind:value={$in_memory_discrete} lineWrapping extensions={[basicSetup,StreamLanguage.define(sparql)]} styles={{
-        "&": {
-            
-            maxWidth: "100%",
-            
-        },
+    <CodeMirror bind:value={$in_memory_discrete} lineWrapping useTab={false} extensions={[basicSetup,StreamLanguage.define(sparql)]} styles={{
+      "&": {
+          maxWidth: "100%",
+      },
     }}/>
     <button
       on:click={run}
       on:keypress={run}
       class="select-none ml-2 mt-2 mb-10 text-white bg-primary-700 hover:bg-primary-700/90 focus:ring-4 focus:ring-primary-500/50 rounded-lg text-base p-2 text-center inline-flex items-center dark:focus:ring-primary-700/55"
     >
-      <RocketLaunch class="mr-2 focus:outline-none" />
+      <RocketLaunch tabindex="-1" class="mr-2 focus:outline-none" />
       Run Update
     </button>
+    <button
+      on:click={open_viewer}
+      on:keypress={open_viewer}
+      class="select-none ml-2 mt-2 mb-10 text-gray-600  focus:ring-4 focus:ring-primary-500/50 rounded-lg text-base p-2 text-center inline-flex items-center dark:focus:ring-primary-700/55"
+    >
+      <Sun class="mr-2 focus:outline-none" tabindex="-1" />
+      View Graph
+    </button>
     
       
   </div>
\ No newline at end of file
diff --git a/ng-app/src/lib/FullLayout.svelte b/ng-app/src/lib/FullLayout.svelte
index ba4276f..e6ba55c 100644
--- a/ng-app/src/lib/FullLayout.svelte
+++ b/ng-app/src/lib/FullLayout.svelte
@@ -17,6 +17,7 @@
     SidebarWrapper,
     Modal,
     Toggle,
+    Toast,
   } from "flowbite-svelte";
   import { link, location, push } from "svelte-spa-router";
   import MobileBottomBarItem from "./MobileBottomBarItem.svelte";
@@ -34,7 +35,7 @@
           available_editors, available_viewers, set_editor, set_viewer, set_view_or_edit, toggle_live_edit,
           has_editor_chat, all_files_count, all_comments_count, nav_bar, save, hideMenu, show_modal_menu } from "../tab";
   import {
-    active_session, redirect_after_login,
+    active_session, redirect_after_login, toasts, remove_toast
   } from "../store";
   import ZeraIcon from "./ZeraIcon.svelte";
 
@@ -85,6 +86,9 @@
     XMark,
     ArrowLeft,
     ArchiveBox,
+    CheckCircle,
+    XCircle,
+    ExclamationCircle,
   } from "svelte-heros-v2";
     import NavBar from "./components/NavBar.svelte";
 
@@ -366,6 +370,27 @@
     "mc":Sparkles,
   };
 
+  const toast_color = {
+    "error":"red",
+    "warning":"orange",
+    "success":"green",
+    "info":"blue"
+  };
+
+  const toast_icon = {
+    "error": XCircle,
+    "warning": ExclamationCircle,
+    "success": CheckCircle,
+    "info": InformationCircle,
+  }
+
+  const customEv = new CustomEvent('loaded', {});
+
+	async	function addLoaded(node) {
+		await tick()
+		node.dispatchEvent(customEv)
+	}
+
   let asideClass = "w-48";
   let spanClass = "flex-1 ml-3 whitespace-nowrap";
   let nonActiveClass =
@@ -647,6 +672,15 @@
   </div>
 </Modal>
 
+{#each $toasts as toast, i}
+  <div class="toast fixed flex w-full max-w-xs" style="top:{16+i*74}px;" on:click|capture|stopPropagation={()=>{if (toast.timer) {clearTimeout(toast.timer);}; remove_toast(i);}} 
+    use:addLoaded on:loaded={()=>{if (toast.level=="success") {toast.timer = setTimeout(()=>{remove_toast(i);}, toast.timeout || 10000);}}} >
+    <Toast  color="{toast_color[toast.level]}" >
+      <Icon tabindex="-1"  slot="icon" class="w-8 h-8 p-1 focus:outline-none"  variation="outline" color="currentColor" icon={toast_icon[toast.level]} />
+      {toast.text}
+    </Toast>
+  </div>
+{/each}
 {#if mobile}
   <div class="full-layout">
     {#if !withoutNavBar} 
@@ -825,6 +859,7 @@
     </div>
     <div bind:this={top}></div>
     <main class="mt-11 bg-white dark:bg-black" >
+      
       <slot />
     </main>
   </div>
@@ -869,5 +904,4 @@
       @apply inline-flex items-center border border-gray-200  text-base font-medium px-2 py-2 focus:z-10 focus:ring-2 focus:ring-blue-700 focus:text-blue-700 pr-3;
     }
   }
-
 </style>
diff --git a/ng-app/src/locales/en.json b/ng-app/src/locales/en.json
index 99358f3..9095456 100644
--- a/ng-app/src/locales/en.json
+++ b/ng-app/src/locales/en.json
@@ -1,4 +1,9 @@
 {
+  "app": {
+    "sparql_update_editor" : {
+      "success": "SPARQL Update successful!"
+    }
+  },
   "doc": {
     "doc": "Document",
     "protected_store": "Protected Profile",
diff --git a/ng-app/src/store.ts b/ng-app/src/store.ts
index 57c54eb..c3043fa 100644
--- a/ng-app/src/store.ts
+++ b/ng-app/src/store.ts
@@ -70,6 +70,62 @@ export const select_default_lang = async () => {
         }
     }
 };
+/**
+ * { 
+ *      level:"error",//"warning","success","info"
+ *      text: ""
+ * }
+ */
+export const toasts = writable([
+    // {
+    //     level:"error",
+    //     text: "this is a serious error",
+    // },
+    // {
+    //     level:"info",
+    //     text: "this is an information for you that is very long long long and so long it doesnt fit",
+    // },
+    // {
+    //     level:"warning",
+    //     text: "this is a warning. be warned!",
+    // },
+    // {
+    //     level:"success",
+    //     text: "this is a success story",
+    //     timeout: 5000,
+    // }
+    
+]);
+
+export const remove_toast = function(idx) {
+    toasts.update((old)=>{
+        old.splice(idx,1);
+        return old;
+    });
+}
+
+export const toast = function(level, text) {
+    toasts.update((old)=>{
+        old.push({level,text});
+        return old;
+    });
+}
+
+export const toast_error = (text) => {
+    toast("error", text);
+}
+
+export const toast_info = (text) => {
+    toast("info", text);
+}
+
+export const toast_warning = (text) => {
+    toast("warning", text);
+}
+
+export const toast_success = (text) => {
+    toast("success", text);
+}
 
 export const scanned_qr_code = writable("");
 export const wallet_from_import = writable<null | object>(null);
@@ -324,8 +380,7 @@ export const digest_to_string = function(digest) {
 export const sparql_update = async function(sparql:string) {
     let session = get(active_session);
     if (!session) {
-        console.error("no session");
-        return;
+        throw new Error("no session");
     }
     let nuri = "did:ng:"+get(cur_tab).branch.nuri;
     await ng.sparql_update(session.session_id, nuri, sparql);
diff --git a/ng-app/src/styles.css b/ng-app/src/styles.css
index a974d0c..95f2b59 100644
--- a/ng-app/src/styles.css
+++ b/ng-app/src/styles.css
@@ -197,6 +197,13 @@ h1 {
     line-height: 1.1;
 }
 
+.toast {
+    left: 50%;
+    transform: translateX(-50%);
+    z-index: 49;
+    cursor: pointer;
+}
+
 input,
 button {
     border-radius: 8px;
diff --git a/ng-app/src/tab.ts b/ng-app/src/tab.ts
index bb70af0..7d5a77f 100644
--- a/ng-app/src/tab.ts
+++ b/ng-app/src/tab.ts
@@ -481,6 +481,10 @@ export const set_view_or_edit = (val:boolean) => {
     });
 }
 
+export const open_viewer = () => {
+    set_view_or_edit(true);
+}
+
 export const cur_viewer = derived(cur_tab, ($cur_tab) => {
     let app_name = $cur_tab.graph_or_discrete ? $cur_tab.graph_viewer : $cur_tab.discrete_viewer;
     if (app_name) {
diff --git a/ng-sdk-js/src/lib.rs b/ng-sdk-js/src/lib.rs
index 4b03f75..2aa3cdb 100644
--- a/ng-sdk-js/src/lib.rs
+++ b/ng-sdk-js/src/lib.rs
@@ -319,11 +319,14 @@ pub async fn sparql_update(
         session_id,
     });
 
-    let _ = nextgraph::local_broker::app_request(request)
+    let res = nextgraph::local_broker::app_request(request)
         .await
         .map_err(|e: NgError| e.to_string())?;
-
-    Ok(())
+    if let AppResponse::V0(AppResponseV0::Error(e)) = res {
+        Err(e)
+    } else {
+        Ok(())
+    }
 }
 
 #[cfg(wasmpack_target = "nodejs")]