unable to format 07/24/2020 error in Tranform map

[OluseyiS3924078]

I have two date fields that i am mapping in my Tranform map

the source date field has the following format - mm/dd/yyyy <time>  there is no existing date format in ServiceNow that matches that.  Also i need it the instance format - yyyy-mm-dd<time>

Is there a way for me to change the format using a script, or will i have to do some manipulation in Notepad++?

[Tanushree Maiti]

Update the source script of field map to:

answer = (function transformEntry(source) {

	var targetDate = (source.u_date.getDisplayValue());
	formattedTargetDate = targetRefreshDate.getByFormat("yyyy-mm-dd");
	gs.log("SNOW formatted date - " + formattedRefreshDate);
	return formattedRefreshDate; 

})(source);

[Santhana Rajhan]

Aren't you able to define the date format or create a new one?