Difference between ByVal and ByRef?

Question

What is the difference? I always use ByVal, but, I don\'t really have a good idea of when should I and when not...

Answer 1

I hope this answers your question

Sub last_column_process()
Dim last_column As Integer

last_column = 234
MsgBox last_column

trying_byref x:=last_column
MsgBox last_column

trying_byval v:=last_column
MsgBox last_column

End Sub

Sub trying_byref(ByRef x)
x = 345
End Sub

Sub trying_byval(ByRef v)
v = 555
End Sub