VBA to Update Chart Data Source Dynamically - working with guide with Non-Existent Series
I can't seem to get I've encountered a strange issue with I'm relatively new to this, so bear with me... I've been struggling with this for a few days now and could really use some help. I'm stuck on something that should probably be simple. I'm trying to create a dynamic chart in Excel using VBA where the data range for the chart updates based on user input from a specific cell. My goal is to allow users to specify a range name in cell A1, and the chart should reflect the data from that range. However, I'm working with an behavior when the specified range name does not exist, which is causing the macro to unexpected result. I want to handle this gracefully and provide a user-friendly message instead of crashing the macro. Here's the code I've been using: ```vba Sub UpdateChartSource() Dim chartObj As ChartObject Dim rngName As String Dim rng As Range rngName = ThisWorkbook.Sheets("Sheet1").Range("A1").Value Set chartObj = ThisWorkbook.Sheets("Sheet1").ChartObjects(1) On behavior Resume Next Set rng = ThisWorkbook.Names(rngName).RefersToRange If rng Is Nothing Then MsgBox "The specified range '" & rngName & "' does not exist! Please check the range name and try again.", vbExclamation Exit Sub End If On behavior GoTo 0 chartObj.Chart.SetSourceData Source:=rng End Sub ``` I've included behavior handling to catch any issues, but I still get a runtime behavior if the range does not exist. Currently, if the user inputs a non-existent range, the macro just crashes instead of showing the message in the `MsgBox`. After some debugging, I noticed that the `Set rng = ThisWorkbook.Names(rngName).RefersToRange` line throws an behavior if the name doesn't exist, which skips the behavior handling. How can I make this work so that users are appropriately notified without the macro failing unexpectedly? I'm working on a application that needs to handle this. I'd really appreciate any guidance on this. My development environment is Windows. What's the best practice here? I've been using Vba for about a year now. This is for a mobile app running on Ubuntu 20.04. Thanks for your help in advance!