Perhaps we have a language barrier...or maybe you don't understand what BSSID means.
OH!!!!!
Again (this config comes from successfully testing on a My Net N750):
config wifi-iface 'wifinet2'
option ssid 'xxxxxxxxxxxxxxxxxx'
option device 'radio1'
option mode 'sta'
option key 'xxxxxxxxxxx'
option network 'wwan'
option encryption 'psk2'
option macaddr '00:aa:bb:cc:dd:ee'
This is the N750 connected to my other AP: