When you setup a Partial screen, make sure your match section applies to only the rows (I generally always use a full row as my partial screen or perhaps multiple rows) that you wish to match. For a given partial screen, there is a property called Instances that gives you an array of each of the partial screens attached to that control. You can iterate that or use the Length of that array as the limit for a forLoop. I suspect though that your matching of a partial screen is the problem and you just need to make sure that whatever you apply works for all instances.