Basically, you have three options:
1) Wait. It will eventually get to 32, but for how long is anybody's guess. Maybe a minute, maybe more, maybe less.
2) Increase your Max Connections if you want more than 31/32. However, I've seen that it will just as often stay one under even then: 37/38 - 41/42, etc.
3) Go to
https://bitnodes.io/ and find some juicy nodes to add to your list using the addnode=IPADDRESS:8333 command. I've found this will usually max out my connection choice: 32/32 - 42/42, etc.
Cheers!
Thank you for response. However, I am ok with the number of outgoing connection. My issue is that there is NO incomming connections, so the numer 32 is grayed out. How can I make sure that I there are incoming connections?