How to configure STA-limit on AC?

The STA limit for all AP is 128, but only 64 clients can be connected. So how to configure it to 128?
The STA-limit command can be applied to WLAN-config, AP-group, AP-config, and AC-controller.
In these 4 modes, the STA-limit has no priority relationship, and the number of STAs is limited by all these configurations.
For example, if STA-limit is configured as 64 (or by default) on an AP and the STA-limit is configured as 128 on AC, therefore the maximum number of users that can be associated with this AP is 64.
For ap-config command:
Configure for all AP:

WS>en
WS#conf
WS(config)#ap-conf all
You are going to config all APs.
WS(config-ap)#sta-limit 256
WS(config-ap)#sta-limit 128 radio 1   --- set limit of 2.4G to 128

WS(config-ap)#sta-limit 128 radio 2   --- set limit of 5G to 128

Configure for a specific AP:

WS>en
WS#conf
WS(config)#ap-conf 680
WS(config-ap)#sta-limit 256
WS(config-ap)#sta-limit 128 radio 1   --- set limit of 2.4G to 128

WS(config-ap)#sta-limit 128 radio 2   --- set limit of 5G to 128

For wlan-config command:

WS>en
WS#conf
WS(config)#wlan-config 1"fitAP_test"    -----"fit AP_test" is SSID name

WS(config-wlan)#sta-limit per-ap 128     -----set sta-limit to 128 per AP