Trying to replace text + date just by date using regex, but it not works:

```
function myfunction() {  
   var SourceFolder = DriveApp.getFolderById("");
   var Files = SourceFolder.getFiles()
   var body = DocumentApp.getActiveDocument().getBody();
   while(Files.hasNext()) {
       var file = Files.next();
       body.replaceText("Date: \d{2}.\d{2}.\d{4}", "31.10.2020")
   }  
 }

```

Thanks