Charts Do Not Automatically Update When Data Changes

Question

Hopefully this is an easy one. I have a series of charts in MS Excel that point to data on the same worksheet. The data on the worksheet is calculated using a VBA function. W

Answer 1

UDF getWeekValue has to be marked as volatile.

 Function getWeekValue (weekNumber As Integer, valuesRange As Range) As Integer   
 
 Application.Volatile '!!

 Dim aCell As Range  
 Dim currentDate As Date
 
 '...