Use KalturaMediaEntryFilter API to list Media Created by multiple people

So, I have created a page to list media entries, but I am not sure how I can list media entries created by multiple people. If I use:

$filter = new KalturaMediaEntryFilter();
	$filter->orderBy = KalturaMediaEntryOrderBy::CREATED_AT_DESC;
	//$filter->mediaTypeEqual = 1; // video
	$filter->creatorIdEqual = 'rpelletier'; 

This will list all media created by rpelletier, but what I want to do is list all media by rpelletier, and lets say cwhalen. How would I go about doing that. The filter does not seem to accept an array of values.