Problem with many Crossbars

[DIdro]

I use four channel PCI DVR-Capture card (based on 4 x Philips SAA713x chip).
I install WDM driver and after that I have 4 devices (Philips SAA7134
WDM Capture) in Windows Device Manager.
For testing purpose I create a DirectShow graph in GraphBuilder
application and note that I have 4 WDM Capture Device and 4 WDM
CrossBar device.

But when I use videoInput, than I could only capture video from the
first device (only from 1 out of 4 channels).

It is interesting to note, that after a moment, when I create a
DirectShow graph in GraphBuilder (and connect successful all WDM
CrossBar device to WDM Capture Device), videoInput test program
capture second channel successful.

So I think, that I should somehow tell to videoInput, that I have 4
CrossBar and that it should connect first WDM Caputre to first
Crossbar, second to second Crossbar and so on...
How I could solve my problem ?

Thank you,