Is this the correct process to change VPG via API

The following code completes without error, but it doesn’t do anything either. Is this even the correct process to change the journal history in an existing VPG?

write-host “#1. Get Identifier to use in VPG settings object”
$JSONIdentifier=”{““VpgIdentifier””:””103f201a-35f3-4d3e-a5e5-a6010efabfbf””}”
$VPGSettingsIdentifierUrl = $BaseURL+”vpgsettings”
$VPGSettingsIdentifier = Invoke-RestMethod -Method POST -Uri $VPGSettingsIdentifierUrl -Body $JSONIdentifier -Headers $ZertoSessionHeader -ContentType $Type

write-host “#2. Get VPG Settings”
$VPGSettingsUrl = $BaseURL+”vpgsettings/”+$VPGSettingsIdentifier
$VPGSettings = Invoke-RestMethod -Method GET -Uri $VPGSettingsUrl -Headers $ZertoSessionHeader -ContentType $Type

write-host “#3. Change Journal History Setting”
$JSONBasicSettings=“{“”JournalHistoryInHours””:24}”

$VPGBasicSettingsUrl = $BaseURL+”vpgsettings/”+$VPGSettingsIdentifier+”/basic”
$VPGBasicSettings = Invoke-RestMethod -Method PUT -Uri $VPGBasicSettingsUrl -Body $JSONBasicSettings -Headers $ZertoSessionHeader -ContentType $Type

write-host “#4. Commit new VPG Settings”
$VPGSettingsCommitUrl = $BaseURL+”vpgsettings/”+$VPGSettingsIdentifier+”/commit”
$VPGSettingsCommit = Invoke-RestMethod -Method POST -Uri $VPGSettingsCommitUrl -Headers $ZertoSessionHeader -ContentType $Type