This simple trick will enable you to create tool tip in dashboards which will enable customers to know what exactly the value shows and where it comes from. It is on demand and it will appear only if customers points in Dashboard viewer or even that functionality works in SAP Dashboards for Mobile for both IOS and Android.
Following these simple steps will allow your to create this using dynamic visibility.
Select a Toggle button from the components and place it on the canvas.
Go to Toggle button properties and under Text properties remove the tick mark on Labels as shown below.
Select Behavior In Label properties window and set the Dynamic Visibility.
Status : E3 &
Key : 1
As show in the below Fig..
Go to the preview and move your mouse pointer on the image, now you can see the label with text.
You now successfully completed all the required steps to enable this Toggle tip help dynamically using powerful Dynamic Visibility in SAP Dashboards 4
Hope this helps you.