Replace many text in text box

I neeed to many text in a textbox at same time

For example

Textbox 1 : KODULAR COMMUNITY

LIST 1 :
A
B
C
D

… Z

LIST 2 :
1
2
3
4
… 26

when button 1 click

TEXTBOX 1 = KODULAR COMMUNITY
conveterd = 111542112118 3151313211492025

Do you also like to decode your encoded text later again? How do you know later, if an encoded character does have 1 or 2 digits? Tip: use only 2 digit numbers…

01
02

11
12

26

Taifun

Ok but how to make

Learn from the example by Italo, you can find it in the App Inventor Gallery

https://gallery.appinventor.mit.edu/?galleryid=6407304567324672

Taifun