$Date = Get-Date;
# ...run rest of the script...
$Modified = $($(ls 'C:\PowerShell\Storage\Files\ConfigEQL.html').LastWriteTime -gt $Date);
$Modified will be $true if it was modified, $false otherwise.
What you posted last is putting the file in $File if it was modified in the last 2 minutes,
otherwise it will be $null. It serves the purpose for you, I just prefer having the result in a
boolean fashion, maybe for a later use.