Powershell: Updating string in hash table - powershell

Question

I have a collection of custom objects and need to do the following steps for each object:
Replace "Team1 Group" with "Team2 Group"
Save the resulting update to a hash table, which I will pass to an API
The objects look like this:
id : 1
groupId : 1
name : Customer1 Dashboard
fullName : Customer Dashboards/Team2 Group/Customer1 Group/Customer1 Dashboard
groupName : Customer1 Group
groupFullPath : Customer Dashboards/Team2 Group/Customer1 Group
widgetTokens : { #{type = owned; name = defaultResourceGroup; value = Client Teams/Team1 Group/Customers/Customer1*; inheritList = System.Object[] }, #{type = owned; name = defaultWebsiteGroup; value = Client Teams/Team1 Group/Customers/Customer1; inheritList = System.Object[]}}
This is what I have so far:
Foreach ($dashboard in $allDashboards) {
$dashboardProperties = #{ }
$dashboard.psobject.properties | ForEach-Object { $dashboardProperties[$_.Name] = $_.Value }
#($dashboardProperties.GetEnumerator()) | Where-Object { $_.Name -eq 'widgetTokens' } | Select-Object -ExpandProperty Value | Where-Object { $_.Value -match "Team1 Group" } | ForEach-Object { $dashboardProperties[$_.Key] = #($_.value.replace('Team1 Group', 'Team2 Group')) }
$dashboardProperties
#Code to interact with an API
}
Because there are two items that match the "#($dashboardProperties.GetEnumerator()) | Where-Object { $_.Name -eq 'widgetTokens' }..." line (at least, I think that's why), I am getting the following error:
Index operation failed; the array index evaluated to null.
At line:1 char:200
+ ... ch-Object { $dashboardProperties[$_.Key] = #($_.value.replace('Team1 ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : NullArrayIndex
Index operation failed; the array index evaluated to null.
At line:1 char:200
+ ... ch-Object { $dashboardProperties[$_.Key] = #($_.value.replace('Team1 ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : NullArrayIndex
When I run this, I see both lines, as expected:
#($dashboardProperties.GetEnumerator()) | Where-Object { $_.Name -eq 'widgetTokens' } | Select-Object -ExpandProperty Value | Where-Object { $_.Value -match "Team1 Group" }
I am not sure how to move past this, any thoughts?
Thanks

Answer 1

Based on feedback from Reddit, looks like this should work:
$DashboardProperties.WidgetTokens |
Where-Object { $_['Name'] -eq 'widgetTokens' -and $_['Value'] -match 'Team1 Group' } |
ForEach-Object { $_['Value'] = $_['Value'] -replace '1','2' }