If function?

I am trying to make a function that only shows the number of days that it has been in the work book, but falls in a certain range of days. I have four column for the ranges: <30, 30-60, 60-90, and >90. I only want the value to show up if it falls in that range for that column. I think I am close with one of the formulas that I have tried but it won't show the value. This is what I have =IF(DAYS360(Tracker!B4,TODAY())>90,0,""). For the true part it comes back as 0 when I need it to come back as the value for the number of days.

This is how I solved it =IF((DAYS360(Tracker!B4,TODAY()))<=30,Tracker!U4,"") Thanks for you help!