ubuntu 20.04 network/wifi

[R C]

Hello,


I am installing Ubuntu 20.04 on an rpi4, and want the wireless to 
connect to an access point without using a password.


so in 50-cloud-init.yaml I have a section lke:

             optional: true
             access-points:
                 "MY-SSID":
                     password: "xxxxxxxx"
             dhcp4: true


but I don't want it to use a password, the access point is "open" :  I I 
leave the line "password: "xxxxxxxx"" out  it complains about 
indentation, and also

when I leave the password 'blanl'


How can I have it connect, without using a password?


thanks,


Ron