I want the customer can recharge application from your machine at any given time, at any given time,
Help me please
This is not directly possible.
You have to look at EDX or MACROS
This is only possible if your machine have access directly to the data, with the button
EDX would be the safe of what you looking for. You can read more here:
Using EDX in QlikView 11 - basic example
Using EDX in QlikView 11
Retrieving data ...