Before we start, we need to know what SELECTEDVALUE is. It is a function in Power BI which is useful for creating dynamic text and logic by returning a specific value based on user selection.
In the screenshot below, you can see how you can use it.
What about Parameters?
Field parameters in Power BI allow users to dynamically switch between different measures or dimensions in a visual using a slicer or dropdown. All values need to be aggregated or not aggregated — you can't mix them.
If you want to create parameters, you need to follow these steps:
1. Go to Modeling → New Parameter
2. You can choose “Fields” or “Numeric Range”
3. Then choose the value you want to see in your visualization
4. And after that, put it into your visualization
You can see my Dashboard hier 😄
I hope it was helpful!