How i can print registerhepler value in template

i want to print query value in template using RegisterHelper see my code what i want, but kindly my question is that my function is returning which how i can print it on html template

Template.registerHelper("itemLookup", function(exerciseMasterId){
    var abc= customexecise.find({'exerciseMasterId': exerciseMasterId})
    return abc


{{#each itemLookup }}
it is not printing value of name kindly correct what it should be it is returning still