preseed file is ignored

In maas : 2.8.1 (8567-g.c4825ca06) I would like run customization in deployment ubuntu server, so i was created file
/var/snap/maas/current/preseeds/curtin_userdata_ubuntu

with content

#cloud-config
debconf_selections:
maas: |
{{for line in str(curtin_preseed).splitlines()}}
{{line}}
{{endfor}}

late_commands:
maas: [wget, ‘–no-proxy’, ‘{{node_disable_pxe_url}}’, ‘–post-data’, ‘{{node_disable_pxe_data}}’, ‘-O’, ‘/dev/null’]
10_netplan_config_add: [“curtin”, “in-target”, “–”, “sh”, “-c”, “/usr/bin/wget -O /etc/netplan/50-cloud-init.yaml http://192.168.70.99/60-cloud-init.yaml”]
20_netplan_generate: [“curtin”, “in-target”, “–”, “sh”, “-c”, “/usr/sbin/netplan generate”]
30_netplan_apply: [“curtin”, “in-target”, “–”, “sh”, “-c”, “/usr/sbin/netplan apply”]

deploy Ubuntu focal is finish wo errors but curtin file above is not implemented, and in cloud-init.log on the deployed server is not any info about this curtin file.

Any idea?

Thx

jan