Configure crossdomain.xml

Hi.
I’ve tried to configure UI block according to this documentation: ui Block - Agent Configuration | Nomad | HashiCorp Developer

My config looks like that:

ui {
enabled = true
content_security_policy {
connect_src = [“‘self’”, “https://api.example.com”]
default_src = [“‘none’”]
form_action = [“‘none’”]
frame_ancestors = [“‘none’”]
img_src = [“‘self’”,“data:”]
script_src = [“‘self’”]
style_src = [“‘self’”,“‘unsafe-inline’”]

}
}

But, my crossdomain.xml configuration doesn’t change. Could you explain me, where I made mistakes?