Thresholds tab in snort - suppress not stopping alerts

[sollostech]

I am trying to suppress some TCP port scans I keep getting and have this in my threshold tab:

suppress gen_id 122, sig_id 23

to deal with these alerts, but I am still getting these alerts:

[ ** ] [ 122:23:0 ] (portscan) UDP Filtered Portsweep [ ** ] 
[ Priority: 3 ] 
01/27-07:49:37.512438 213.176.128.51 -> 64.238.121.157
PROTO:255 TTL:0 TOS:0x0 ID:2302 IpLen:20 DgmLen:164

[ ** ] [ 122:23:0 ] (portscan) UDP Filtered Portsweep [ ** ] 
[ Priority: 3 ] 
01/27-07:50:17.262179 94.76.107.2 -> 64.238.121.154
PROTO:255 TTL:0 TOS:0x0 ID:49986 IpLen:20 DgmLen:164

[ ** ] [ 122:23:0 ] (portscan) UDP Filtered Portsweep [ ** ] 
[ Priority: 3 ] 
01/27-08:54:06.886705 168.95.192.166 -> 64.238.121.157
PROTO:255 TTL:0 TOS:0x0 ID:63584 IpLen:20 DgmLen:163 DF

[ ** ] [ 122:23:0 ] (portscan) UDP Filtered Portsweep [ ** ] 
[ Priority: 3 ] 
01/27-08:55:21.970159 81.90.225.100 -> 64.238.121.154
PROTO:255 TTL:0 TOS:0x0 ID:58339 IpLen:20 DgmLen:163

[ ** ] [ 122:23:0 ] (portscan) UDP Filtered Portsweep [ ** ] 
[ Priority: 3 ] 
01/27-08:58:45.898299 94.76.107.2 -> 64.238.121.154
PROTO:255 TTL:0 TOS:0x0 ID:45271 IpLen:20 DgmLen:164