diff --git a/knowledge-base/chart-tooltip-series-item.md b/knowledge-base/chart-tooltip-series-item.md
index 9ce6dc6..2a9b224 100644
--- a/knowledge-base/chart-tooltip-series-item.md
+++ b/knowledge-base/chart-tooltip-series-item.md
@@ -27,7 +27,7 @@ category: knowledge-base
 
 ## Description
 
-How to add a tooltip to the Chart series items?
+How to add a tooltip to the Chart labels on the y-axis?
 
 ## Solution
 
diff --git a/knowledge-base/examples/chart-tooltip-series-item/main.vue b/knowledge-base/examples/chart-tooltip-series-item/main.vue
index c9a42db..90416ff 100644
--- a/knowledge-base/examples/chart-tooltip-series-item/main.vue
+++ b/knowledge-base/examples/chart-tooltip-series-item/main.vue
@@ -105,7 +105,7 @@
           {
             Id: 31289,
             ApprovalStatus: {
-              Name: 'Approved by a very log whatnot label here sooo long',
+              Name: 'Approved by a very long, long and even longer label shown inside a tooltip',
             },
             ExternalClient: { Id: 5394 },
             Actual: { TotalConsumption: 7380 },
diff --git a/knowledge-base/upload-custom-validation-error.md b/knowledge-base/upload-custom-validation-error.md
index 8061686..7e707fc 100644
--- a/knowledge-base/upload-custom-validation-error.md
+++ b/knowledge-base/upload-custom-validation-error.md
@@ -73,6 +73,8 @@ event.newState[0].validationErrors
 ```
 ### Runnable example
 
+To test the following example, upload files by either clicking on the "Select files" button or by dragging and dropping them. You will then see the custom error message being triggered:
+
 {% meta id:index height:480 %}
 {% embed_file upload-custom-validation-error/main.vue preview %}
 {% embed_file upload-custom-validation-error/main.js %}