I want to now what key is been pressed.

I want to make a password dialog but i dont want to see the password.

So everytime I press a key i put it to a string and put a * to the screen

To make a password dialog you can do like this :

With CoDeSys Version2 :

In category Input, of the object you use, you have to select hidden. And by entering your code you will only see stars in the input area.

With CoDeSys version 3 :

Use Inputs On Mouse Click for example, choose Write a variable and tick Password field

Hoping to have answered your question

Thanks but i tried that. I still see what i am typing.. and you have to actived the edit field and converm with enter. And if I now how, then I can use de other key's F1 F12 as well.