so this is our calculated field demo column that we just created and as you can see it matches our sum of profit column exactly and that’s exactly what we want to see we want to kind of check to make sure that this revenue and cost fields are generating the correct profit and sometimes those are off and so it’s really good to kind of check those and have that additional column you probably wouldn’t have this if you were you know going to submit this to somebody just so you know now that this is an actual column you can’t go here and do something like cut or and paste it over here you know that’s not i won’t let you do that what it is is now an actual column and so we can go and remove that and we can add it back at any moment so if we want to go back and add that oops add that down here we can do that because we’ve created that column it’s now permanently there unless we go and delete all of that data and so we can just click this check mark and it will get rid of it for us all