To make dynamic bucketwise report from Ageing report while providing days from form

I tried to write code for two text boxes and that too from Day 0 to Day 10, the last code is written for three text boxes which is for Day 0 to Day 5, Day 6 to Day 10 and Day 11 & Above.

Can anyone see this code and assist me in optimising it as I'm wondering there must be any other way round to do it because it needs to be written for a combination of Day 0 to Day 120 Plus into 7 textboxes.