Auto generate next sequence number behind the date

[Weasley0307]

Hi I am a beginner that just started learning vba recently. I am working on a user entry form where it will automatically generate the next reference no. in the format of YYMMDD-xxx, where xxx will starts from 001 if it is the first entry of today, so theoretically it will look something like this:

231225-001 (first entry of today)
231225-002 (second entry of today)
231226-001 (first entry of a new day)
etc..

I got the format of the date worked out, but I have absolutely no idea how to generate the sequential number behind it and how to code so that it can detect whether the new entry is the first on that current date or not.

Hope someone can help me with this. Thanks!

 

[mse330]

Hello

Try below code ... Assuming you're storing the data in Sheet1 from cell A2 going downward to A10000

Sub test()

Dim NextSeq As Long
NextSeq = [sum(--(left('Sheet1'!A2:A10000,6)=text(today(),"yymmdd")))] + 1

MsgBox "Next sequence number is : " & NextSeq

End Sub