diff --git a/web/collector/CollectorClient.ts b/web/collector/CollectorClient.ts
--- a/web/collector/CollectorClient.ts
+++ b/web/collector/CollectorClient.ts
@@ -1,4 +1,6 @@
-type Settings = Array<[string,string,string|number]>;
+import { Literal, NamedNode } from "n3";
+
+type Settings = Array<[NamedNode,NamedNode,Literal]>;
 
 export class CollectorClient {
   private settings: Settings;
@@ -13,13 +15,14 @@ export class CollectorClient {
     }, 1000);
   }
   private async put() {
+    // todo: WS
     await fetch("/service/collector/attrs", {
       method: "PUT",
       body: JSON.stringify({
         client: this.clientName,
         clientSession: "unused",
         sendTime: Date.now() / 1000,
-        settings: this.settings,
+        settings: this.settings.map(([d,da,v]) => [d.value,da.value,v.value])
       }),
     });
   }