While it would usually mean that you would have a lot to do, it is actually quite easy to do. All that you should do is to follow a couple of simple steps and that is it.
The first step is, of course, to create a form and add all of the languages that you wish it to hold.
Once you do this your form will have a new entry in the conditions labeled as Language.
To setup the Condition, click SETTINGS at the top > CONDITIONS on the left > then CHANGE THANK YOU PAGE.
Select the Language from the “IF” statement and select the target value which is the languages that are selected in the form multilingual settings and make sure to select “Display a custom message on submission” in the “DO” statement.
Once you make your changes you can simply click on Save button and that is it.
You should repeat the steps for all languages that you want to have a different Thank You messages for.
You can see a sample form of this here: http://form.jotformpro.com/form/51363751286963
For the ones that you do not, they will be shown the default message instead, but in this order:
1. If you have set up your own Thank You Message it will be shown
2. If you have not set it up, then Default Thank You Page will be shown instead.
You can see more about the thank you pages here: Setting Up the Thank You Page
If you have any comments or questions do let us know, by filling out the form under this guide and we would be happy to see and answer your questions.