VBA listbox updates - excel

Question

i have below VBA code to update long list(1000) of part userform listbox with constant changes to design.
i need help with below 2 issues i am facing with code,
1)somehow, it is only updating only 1st selected item under multiselect listbox. can you pl help to check what is the issue with it to get all selected items updated by command button?
also, there are number of duplicates that i want to updates as well. however, below code updates only one and not other duplicate. can you pl help to correct code so it can update duplicates as well?
Private Sub cmdaction_Click()
Dim t, t1 As String
Dim vrech As Range, lColumn As Range
Dim sh As Worksheet
Dim i As Long
Dim selItem As String
Set sh = ThisWorkbook.Sheets("part bump")
Set lColumn = sh.Range("P1:AZA1").Find(Val(txtchangenumber.Value), , xlValues, xlWhole)
'Set lcolumn1 = sh.Range("F4:F1000")
If UserForm3.txtchangedescrption.Value = "" Then
MsgBox "Please enter Change Description"
Exit Sub
End If
If UserForm3.txtchangenumber.Value = "" Then
MsgBox "Please enter Change Number"
Exit Sub
End If
If UserForm3.cmbaction.Value = "" Then
MsgBox "Please Select part Action"
Exit Sub
End If
If lColumn Is Nothing Then
MsgBox "Change number not found"
Exit Sub
End If
With UserForm3.lstDatabase
For i = 0 To UserForm3.lstDatabase.ListCount - 1
If UserForm3.lstDatabase.Selected(i) = True Then
Set vrech = sh.Range("H4:H250").Find(.Column(7, i), , xlValues, xlWhole)
If Not vrech Is Nothing Then
Select Case cmbaction.Value
Case "RP"
t = Chr(Asc(Mid(.List(i, 7), 2, 1)) + 1)
t1 = Mid(.List(i, 7), 1, 2) & t & Mid(.List(i, 7), 4, 1)
Intersect(vrech.EntireRow, lColumn.EntireColumn) = t1
MsgBox "Selected parts 'RP' Action completed"
Case "RV"
Intersect(vrech.EntireRow, lColumn.EntireColumn) = .List(i, 7)
MsgBox "Selected parts 'RV' Action completed"
Case "DP"
Intersect(vrech.EntireRow, lColumn.EntireColumn) = "Deleted"
vrech.EntireRow.Font.Strikethrough = True
MsgBox "Selected parts 'DP' Action completed"
End Select
End If
End If
Next i
End With
End Sub

Answer 1

Upon further investigation I found that your handling of the Selected property is correct. I have deleted my advice in this regard and apologize for my hasty comment.
I have also re-examined your code and regret, I can't find a reason why it shouldn't deal with all selected items. without access to your workbook i don't have the ability to test and can't help you further.
Your second complaint is caused by this line of code.
Set vrech = sh.Range("H4:H250").Find(.Column(7, i), , xlValues, xlWhole)
It will find the first instance and no others. If you want the search to be repeated a loop will be required that repeats the search. Look up "VBA Find & FindNext MSDN" and you will find code samples how to construct the loop.
Note that in Dim t, t1 As String only t1 is a string. t is defined as a variant by virtue of not having a specified data type. This doesn't appear to be your intention.
I also noted your unusual use of Application.Intersect. Intersect(vrech.EntireRow, lColumn.EntireColumn) should be the equivalent of the simpler Sh.Cells(vrech.Row, lColumn), and it's recommended to specify the Value property when assigning a value to it.