need help on -replace with double quote

Hello,

the following code is not working due to the dot (.) :

$configFiles=get-childitem . *.xml -rec

foreach ($file in $configFiles)

{

(Get-Content $file.PSPath) |

 Foreach-Object {$_ -replace '"Product"."Details"','"Product"."Details123"'`
  -replace '"Market"."Details"','"Market"."Detailsxyz"'}|
 Set-Content $file.PSPath
}

can I have any clue to solve this or any other code to make my -replace code works effectively