Counter/switch

Hello,

I'm trying to use a counter to switch between different values of a switch block (see attachment). I use kind of feedback to reset the counter as soon he reaches specific value. But it doesn't seem to work. I would like to adjust constant value '2' in the examples to walk trough index 0 and 1 of the switch, or to adjust to 5 to walk trough value 0,1,2,3,4. value from index '0' never come to output.
Is it a problem of synchronisation, or problems regarding rising/falling edges of the 'clock'?

Thanks

Nico