Hi eurban,

Using the TAB key, you can change the focus onto the button, would that suffice?

Yes/no wat  I want after input execute of the task without using mouse or keyboard , just like in a message

So, like after the field gets a value, the Task should execute immediately? If so, then choosing a wrong value would also result in the Task being run for the incorrect "Bon”, not sure if that is the intended way.

Could you elaborate on the Use case?

Mark you are right ,  only for speeding up input

How would the GUI know when the input is completed/finished? Or can the user only type in one character?

There are other ways of resolving this challenge, for example having a screen with all receipts "Bonnen’ and using a task to mark the ready "Gereed” upon clicking; therefore eliminating the need of inputting any value inside the Task itself.