what's missing?

I would like to configure via console the wds function of the wlan1

I write these commands

/interface wireless set wds-mode=dynamic-mesh wds-default-bridge=bridge1

but I am asked this parameter: numbers:

What should I write?

Thanks

which wireless interface?

wlan1

when you set something, you need to specify where you set it. in this case:
/interface wireless set wlan1 wds-mode=dynamic-mesh wds-default-bridge=bridge1

Ok, thanks..