How to display message when no return values in powershell script?

Hello,
I have written following command that returns "Failed" timer job titles for previous day :
$FailedSPTimerJobs = Get-SPTimerJob | % { $_.HistoryEntries } | Where-Object {($_.StartTime -gt $YesterdayStartDateTime) -and ($_.To -lt $YesterdayEndDateTime) -and ($_.Status -eq 'Failed')}| Select JobDefinitionTitle | ConvertTo-Html -Fragment
ConvertTo-Html -Body "<font color = blue><H4><B>Report </B></H4></font>$FailedSPTimerJobs " -Title "Test Report" -CssUri C:\style.CSS | Out-File "E:\Reports\Test.html"
However, I need to display Message ( "There are no Failed Jobs recorded") when records are NULL.
Would you please let me know how can I achieve this ?
Thanks and Regards,
Dipti Chhatrapati

You could just do something like
if ($FailedSPTimerJobs){
$FailedSPTimerJobs
= "There are no Failed Jobs recorded"
should have been
if (!$FailedSPTimerJobs){
$FailedSPTimerJobs
= "There are no Failed Jobs recorded"

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