DynamicParam from Powershell script isn't recognized?

PowerShell Universal Universal API
1 
Product: PowerShell Universal
Version: 3.7.8

Hello,

unfortunately I could not find anything about dynamic parameters in the documentation or here in the forum.

Scenario:
I want to provide a script as API that has multiple parameters. In addition, there is an area in the script called “DynamicParam” which I use to provide variable choices for this function and any other input for this parameter would result in an error.

Now I have noticed that when I configure such a function as an API and want to populate the parameter, Powershell Universal simply ignores the dynamic parameter or doesn’t know it exists.

How can I address dynamic parameters correctly? Basically I just want to pass a string via the API to a dynamic parameter within my function.

Is there anything to look up here? Or does this possibility not exist yet?

If it doesn’t exist yet I would file a feature request for this.

Function MyFunction {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory)][ValidateNotNullOrEmpty()][String]$StringParam,
        [Parameter(Mandatory=$false)][ValidateNotNullOrEmpty()][Switch]$SwitchParam
    )
    DynamicParam{
        # Create a dynamic param (I'm using a 3rd-party function)
        
        $Dictionary = New-Object System.Management.Automation.RuntimeDefinedParameterDictionary
            
        $Users = Get-ADUser -Filter * | Where-Object {$_.SamAccountName -match '^\d{7}$'}
        New-DynamicParam -Name SamAccountName -ValidateSet $Users.SamAccountName -DPDictionary $Dictionary -ParameterSetName ID
        New-DynamicParam -Name GivenName -ValidateSet $Users.GivenName -DPDictionary $Dictionary -ParameterSetName GivenName
        New-DynamicParam -Name SurName -ValidateSet $Users.SurName -DPDictionary $Dictionary -ParameterSetName SurName

        $Dictionary
    }
    Begin{
        # prepare any stuff
    }
    Process{
        # process any stuff
    }
    End{
        # end any stuff
    }
}