Need help with custom function basics
I've a requirement for an upper quartile calculation in FM and I've found the one on Brian Dunning's site here
I've every faith in the routine but I'm not 100% how to integrate it into my data and make it work. I've never used a CF before so a bit stuck!
I have a very simple table of data for this requirement which shows values against customers:
Customer ID | Total
1 | 1000
2 | 1650
3 | 2000
I've insert the CF into my function list but I'm not certain what the function parameters should be, nor am I certain whether I need to substitute any field names (ie, swap out 'valuelist' as seen on the link) for example.
Any help appreciated,
Thanks in advance