Powershell–Schedule a SCCM Advertisement using powershell

Question

I need to change advertisement schedule every day.
Advertisement Start Time
Advertisement Expires
Mandatory Assignments
Example of what I need :
Today the Advertisement has the following settings
Advertisement Start Time – 4/20/2012  23:00.
Advertisement Expires – 4/21/2012 06:00
Mandatory Assignments – 4/20/2012 23:30
Tomorrow the Advertisement will have the following settings
Advertisement Start Time – 4/21/2012 23:00.
Advertisement Expires – 4/22/2012 06:00
Mandatory Assignments – 4/21/2012 23:30
I get the script but I could n't change Mandatory assignment. When I run the script Mandatory assignment take advert start time.
The output I get
Today the Advertisement has the following settings
Advertisement Start Time – 4/20/2012  23:00.
Advertisement Expires – 4/21/2012 06:00
Mandatory Assignments – 4/20/2012 23:00
Tomorrow the Advertisement will have the following settings
Advertisement Start Time – 4/21/2012 23:00.
Advertisement Expires – 4/22/2012 06:00
Mandatory Assignments – 4/21/2012 23:00
Can you please help me to modify the Mandatory assignments..
Below is my powershell script.
Param([String[]] $AdvertisementID)
$SCCM_SERVER = "[server name without the brackets]"
$SCCM_SITECODE = "[three letter site code without brackets]"
#$AdvertisementID = "[AdvertisementID without the brackets]"
#Foreach ($AdvertisementID in $AdvertisementIDs)
$AdvertisementSettings = ([WMIClass] "\\$SCCM_SERVER\root\SMS\site_$($SCCM_SITECODE):SMS_Advertisement").CreateInstance()
$AdvertisementSettings.AdvertisementID = $AdvertisementID
#Get lazy properties
$AdvertisementSettings.Get()
#Build the Scheduled Time
# $NewDate = (Get-Date).adddays(1)
$year = [string](Get-Date).Year
$month = [String](Get-Date).Month
if ($month.Length -eq 1) {$month = "0" + $month}
$day = [string](Get-Date).Day
if ($day.Length -eq 1) {$day = "0" + $day}
$ScheduledTime = $year + $month + $day + "230000.000000+***"
#Build the Expiration Time
$ExpireDate = (Get-Date).AddDays(1)
$day = [string]$ExpireDate.Day
if ($day.Length -eq 1) {$day = "0" + $day}
$ExpirationTime = $year + $month + $day + "060000.000000+***"
#Apply the settings to the advertisement
$AdvertisementSettings.PresentTime = $ScheduledTime
$AdvertisementSettings.ExpirationTime = $ExpirationTime
$AdvertisementSettings.ExpirationTimeEnabled = $true
$AdvertisementSettings.put()
$AssignedSchedule = ([WMIClass] "\\$SCCM_SERVER\root\SMS\site_$($SCCM_SITECODE):SMS_ST_NonRecurring").CreateInstance()
$AssignedSchedule.StartTime = $ScheduledTime
$AdvertisementSettings.AssignedSchedule = $AssignedSchedule
$AdvertisementSettings.AssignedScheduleEnabled = $true
$AdvertisementSettings.put()

Answer 1

I haven't got a chance to test this but from what I see...I see what might be causing the issue.
Can't say for sure until I test it but , you use put() to set the WMI instance twice in your last few lines.
So the later put() method invocation might be having problems as WMI Instance has changed already:
#Apply the settings to the advertisement
$AdvertisementSettings.PresentTime = $ScheduledTime
$AdvertisementSettings.ExpirationTime = $ExpirationTime
$AdvertisementSettings.ExpirationTimeEnabled = $true
#$AdvertisementSettings.put() Don't commit now
$AssignedSchedule = ([WMIClass] "\\$SCCM_SERVER\root\SMS\site_$($SCCM_SITECODE):SMS_ST_NonRecurring").CreateInstance()
$AssignedSchedule.StartTime = $ScheduledTime
$AdvertisementSettings.AssignedSchedule = $AssignedSchedule
$AdvertisementSettings.AssignedScheduleEnabled = $true
$AdvertisementSettings.put()
rest of the code looks good but I think this might be causing an issue. I will give it a shot in my lab later.
Do you get any errors .....I don't see any error handling in your code too. So let me go back and try this.
Hope this helps
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