Printing the last digits of a textbox

[Planckarte]

Guys, I have a pretty simple question, but I've no idea about writing command in JS.

The thing I'm trying to do is to print in a textbox the last five digits of another textbox. Something like this:

in my first textbox, I have this serial number: FTFYIOI66779995, and I want to print the last 5 digits: 79995 in other textbox.

Hope I explained myself right And thanks for your help

[try67 · Accepted solution]

If the first field is called "Text1" you can use the following code as the custom calculation script of the second field:

event.value = this.getField("Text1").valueAsString.substr(-5);

[Planckarte]

Thank you! It worked perfectly