diff --git a/package.json b/package.json
index 05bda103..541f48f1 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "Jorge Ramos <jramos@pobox.com>"
   ],
   "engines": {
-    "node": "=10.13.0"
+    "node": "=10.15.2"
   },
   "license": "AGPL-3.0",
   "preferGlobal": true,
diff --git a/packages/core.gbapp/services/GBAPIService.ts b/packages/core.gbapp/services/GBAPIService.ts
index cdd3ed7c..5beaaa48 100644
--- a/packages/core.gbapp/services/GBAPIService.ts
+++ b/packages/core.gbapp/services/GBAPIService.ts
@@ -136,7 +136,7 @@ export class DialogClass {
     function random(low, high) {
       return Math.random() * (high - low) + low
     }
-    const idCallback = random(0, 120000000);E
+    const idCallback = random(0, 120000000);
     this.min.cbMap[idCallback] = cb;
     await this.step.beginDialog('/hear', { id: idCallback });
   }
diff --git a/packages/core.gbapp/services/GBVMService.ts b/packages/core.gbapp/services/GBVMService.ts
index be4ae4f5..b2c2d379 100644
--- a/packages/core.gbapp/services/GBVMService.ts
+++ b/packages/core.gbapp/services/GBVMService.ts
@@ -259,11 +259,16 @@ export class GBVMService extends GBService {
         async step => {
           const cbId = step.activeDialog.state.cbId;
           const cb = min.cbMap[cbId];
+          step.activeDialog.state.cb = cb;
+
+          return await step.next();
+        },
+        async step => {
+          let cb = step.activeDialog.state.cb;
           cb.bind({ step: step, context: step.context });
+          cb(step.result);
 
-          await step.endDialog();
-
-          return await cb(step.result);
+          return await step.next();
         }
       ])
     );