Need help, MicrosoftTeams PowerShell StorageQuota cmdlet doesn't work

[JasonPPF]

Trying to create new Teams then setting the Teams SharePoint Online's Storage Quota.
Code has no error, but the Storage Quota haven't changed, keeping 1048576.
Just wondering is there something wrong or something miss?

try{
    Connect-MicrosoftTeams
    Connect-SPOService
    $url = "http://abc.sharepoint.com/sites/"
    $group = New-Team -DisplayName $displayName -Description $description -Visibility Private -Owner $owner 
    Add-TeamUser -GroupId $group.GroupId -User $user 
    $siteUrl = $url + $group.MailNickName
    Set-SPOSite -Identity $siteUrl -Sharingcapability ExistingExternalUserSharingOnly
    Set-SPOSite -Identity $siteUrl -StorageQuota 10240 #★result = 1048576★
}
catch{
}
finally{
}

[#2 · Accepted solution]

@JasonPPF 

Hmm, may be because site limits are set to Automatic in the SPO Admin Centre

Manage site storage limits - SharePoint in Microsoft 365 | Microsoft Docs

Let me know if this is the case

Best, Chris

[#3]

@ Christopher Hoard

Thank you for your answer!
I'm not sure it's related to Management Shell or not.
Just try the code's order, then it's work!
Maybe it's related to tenant issue.
Thank you for your help!