This article will mention how to change dynamically text by variables.
I'll show it in an instance. We will do that When we type a value in the input component, we want to change labels value dynamicly. We have an input component and a label component as you see in the image eblow.
We should change the value of the content input of the label. We need to select page variable to get the value of the input as you see in the image. If you want to get an app variable, you just start app instead of page.
Then click the preview button. If you don't know what preview is, you can check the article below.
That's it. When you change the value of input, the content value of the label will be changed as you see in the image below.