Changing values in edit text using pop up menu?

I am new to MATLAB GUI, doing a Small project. In pop-up menu i'm going to give string as "Voltage" and "Current" and in Edit txt i'm setting the Limits of voltage and Current. if i'm clicking the "Voltage", that value should appear in Edit text. please help! Thank you.

Answer 1

[Walter Roberson]

function popup1_Callback(hObject, event, handles)
  all_choices = get(hObject, String);
  selected = get(hObject, Value);
  chosen = all_choices{selected};
  set(handles.text1, 'String', ['Enter ', chosen])