How can make so commas not ok in folder name but okay in file name?

Hi,

So someone was kind enough to provide the following code to generate an error message if there is a comma in the folder path.  However, this error is also coming up when there is a comma in the file name.  How can I make this error exclusive to only objecting a comma in the folder name and not the filename.  I don't care if there is a comma in the filename.  For example:

C:\\test,in,the,program\file,1.pdf should generate an error

C:\\testintheprogram\file,1.pdf should not generate an error

if (/,/.test(this.path))

{app.alert("Error 104: Action Wizard will not run with commas present in the path folder.  Please remove all commas from the path foler and re-execute the program.");

event.rc = false;

}