Sync Parent And Child Charts

I’m attempting to built a “Parent Chart” and a “Child Chart.” Whenever a data element is clicked in the Parent Chart the Child Chart should refresh showing further details for the selected element. This is what I have so far but I’m not sure what the syntax for the onClick function should be.

Parent Chart:

        New-UdChart -Title "Parent Chart" -Type Bar -FontColor white -OnClick (
                                New-UDEndpoint -Endpoint {
                                    $Cache:SecLookup = Invoke-WebRequest http://localhost:10001/api/TransLookUp/$($ArgumentList[0]) | ConvertFrom-Json
                                    Sync-UDElement -Id 'ChildChart'
                                } -ArgumentList $(($EventData | ConvertFrom-Json).label) ) -Endpoint {
            $Cache:ParentData = Invoke-SqlCmd2 -ServerInstance $SQLServer -Database $SQLDB -Query $SpentBySection -As PSObject

            $Cache:ParentData | ForEach-Object { 
                [PSCustomObject]@{ 
                    SecNo     = $_.SecNumber;
                    TotRev    = $_.TotalRev; 
                    TotSpent  = $_.TotalSpent;
                }
            } | Out-UDChartData -LabelProperty SecNo -Dataset @(
		            New-UDChartDataset -DataProperty "TotSpent" -Label "Total Spent" -BackgroundColor "#80962F23" -HoverBackgroundColor "#80962F23"
		            New-UDChartDataset -DataProperty "TotRev" -Label "Total Revenue" -BackgroundColor "#8014558C" -HoverBackgroundColor "#8014558C"
	            )
        }

Rest API

$TransactionLookUp += New-UDEndpoint -Url ‘TransLookUp/:SecID’ -Endpoint{
param($SecID)

$Cache:BudgetData | Where-Object SectionID -EQ $SecID | ConvertTo-Json

}

Start-UDRestApi -Endpoint $TransactionLookUp -Port 10001 -AutoReload

Child Chart:

    New-UDElement -Id 'ChildChart' -Tag 'div' -Endpoint {
        New-UdChart -Title "Child Chart" -Type Bar -FontColor white -Endpoint {
            $Cache:SecLookup | ForEach-Object {                     
                [PSCustomObject]@{ 
                    AccNo     = $_.AccNumber;
                    TotSpent  = $_.TotalSpent;
                }
            }|  Out-UDChartData -LabelProperty AccNo -Dataset @(
                  New-UDChartDataset -DataProperty "TotSpent" -Label "Total Spent" -BackgroundColor "green"
              )
        }
    }