To have the box start off invisible and show up on button press:
1. Create the Text box as a label.
2. Insert the name in the text box
3. Selected the text box and set upper left to "Visible" and the function is as follows:
If(VisibleVar=true,true,false)
4. Select the screen and then change the upper left to "OnVisibile" and the function is as follows:
UpdateContext({VisibleVar:false})5. Select the Button and change the upper left to OnSelect:
UpdateContext({VisibleVar:true})6. Navigate away from the screen and back. Upon being visible it will set the VisibleVar to false, leaving your text box hidden. Pressing the button will then change VisibleVar to true showing the text box.
To make the box visible on screen load and then disappear on click simply reverse the #3 step true/false
If(VisibleVar=true,false,true)
(or reverse on-load to false and onselect to true, your choice)