Two (or more) HID devices in one only PIC18F

[mrk89]

Hi guys,
I have done an HID Joystick with analog and digital input and works well with windows.
I'm able to read the buffer that the PIC sends to the PC using a VB.net software I made, so I'm able to read the values of the ADC and the state of the buttons.
Is it possible to write some value to the joystick using the Software, or because the HID device is a joytick, I'm able only to read it? I'm not succeding in doing it.
Do I need to implement another generic HID device to access it with the VB program?

Thank you in advance