Setting Timezone for ChromeOS via GAM ChromePolicy

[CaPSE Admin]

I need to set a manual timezone per OU and I'm struggling to figure out the syntax for GAM and/or if there is a bug that needs to be addressed.

"GAM show chromepolicies" command returns the below in blue text.

- Notice how there is a blank value under "systemTimezone" then another value that appears to be nested under that blank value with the timezone text. I think this might be where my issue is.

Organizational Unit: /abc, Show maximum of 120 Chrome Policies
  chrome.devices.Timezone (26/120)
    name: chrome.devices.Timezone
    orgUnitPath: /abc
    parentOrgUnitPath: /abc
    direct: True
    additionalTargetKeys:
    fields:
      name: systemTimezone
        value:
          value: America/Denver
      name: timezoneDetectionType
        value: DISABLED

This statement works when only setting the detection type:

gam update chromepolicy chrome.devices.Timezone timezoneDetectionType "DISABLED"

When I try to add "systemTimezone" as a name to set or use it it on it's own: 

eg: 

gam update chromepolicy chrome.devices.Timezone timezoneDetectionType "DISABLED" systemTimezone  "America/Denver" orgUnit /abc

gam update chromepolicy systemTimezone  "America/Denver" orgUnit /abc

I get an error message either way that includes the following:

ERROR: Missing argument: Expected <timezonedetectiontype|value>

It appears GAM doesn't see "systemtimeZone" as a valid key to set. 

Any ideas would be appreciated.

[Ross Scroggs]

It works for me.

$ gam update chromepolicy chrome.devices.Timezone timezoneDetectionType "DISABLED" systemTimezone  "America/Los_Angeles" orgUnit /Test

Organizational Unit: /Test, Chrome Policy: chrome.devices.Timezone, Updated

Send me a private Meet/Zoom invitation and we'll investigate.

Ross

----

Ross Scroggs

Ross.S...@gmail.com

<Screenshot 2025-12-02 4.08.20 PM.png>

Any ideas would be appreciated.

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[Ross Scroggs]

Your version is proably out of data, do: gam version check

Current is 7.29.01

https://github.com/GAM-team/GAM/wiki/How-to-Update-GAM7

Ross

----

Ross Scroggs

Ross.S...@gmail.com

On Dec 2, 2025, at 3:01 PM, CaPSE Admin <ad...@capselab.com> wrote:

<Screenshot 2025-12-02 4.08.20 PM.png>

Any ideas would be appreciated.

[CaPSE Admin]

Updated GAM version, executed fine. thanks!