I suppose you looking to filter the InfoTable, check the Find function for InfoTable it should allow you to get the row(s) as per your defined criteria
var myFuzzyObj = new Object();
//defining the value against which I will run the Find function on InfoTable
//using Find function to look for the first row that matches my required criteria;
Of course there are bunch of other Filter options that you can apply to your InfoTable, try this Getting to Know InfoTables.pdf
Hope this helps.