Excel VBA: Loop through cells and copy values to another workbook - vba

Question

I already spent hours on this problem, but I didn't succeed in finding a working solution.
Here is my problem description:
I want to loop through a certain range of cells in one workbook and copy values to another workbook. Depending on the current column in the first workbook, I copy the values into a different sheet in the second workbook.
When I execute my code, I always get the runtime error 439: object does not support this method or property.
My code looks more or less like this:
Sub trial()
Dim Group As Range
Dim Mat As Range
Dim CurCell_1 As Range
Dim CurCell_2 As Range
Application.ScreenUpdating = False
Set CurCell_1 = Range("B3") 'starting point in wb 1
For Each Group in Workbooks("My_WB_1").Worksheets("My_Sheet").Range("B4:P4")
Set CurCell_2 = Range("B4") 'starting point in wb 2
For Each Mat in Workbooks("My_WB_1").Worksheets("My_Sheet").Range("A5:A29")
Set CurCell_1 = Cells(Mat.Row, Group.Column) 'Set current cell in the loop
If Not IsEmpty(CurCell_1)
Workbooks("My_WB_2").Worksheets(CStr(Group.Value)).CurCell_2.Value = Workbooks("My_WB_1").Worksheets("My_Sheet").CurCell_1.Value 'Here it break with runtime error '438 object does not support this method or property
CurCell_2 = CurCell_2.Offset(1,0) 'Move one cell down
End If
Next
Next
Application.ScreenUpdating = True
End Sub
I've done extensive research and I know how to copy values from one workbook to another if you're using explicit names for your objects (sheets & ranges), but I don't know why it does not work like I implemented it using variables.
I also searched on stackoverlow and -obviously- Google, but I didn't find a similar problem which would answer my question.
So my question is:
Could you tell me where the error in my code is or if there is another easier way to accomplish the same using a different way?
This is my first question here, so I hope everything is fine with the format of my code, the question asked and the information provided. Otherwise let me know.

Answer 1

5 Things...
1) You don't need this line
Set CurCell_1 = Range("B3") 'starting point in wb 1
This line is pointless as you are setting it inside the loop
2) You are setting this in a loop every time
Set CurCell_2 = Range("B4")
Why would you be doing that? It will simply overwrite the values every time. Also which sheet is this range in??? (See Point 5)
3)CurCell_2 is a Range and as JohnB pointed it out, it is not a method.
Change
Workbooks("My_WB_2").Worksheets(CStr(Group.Value)).CurCell_2.Value = Workbooks("My_WB_1").Worksheets("My_Sheet").CurCell_1.Value
to
CurCell_2.Value = CurCell_1.Value
4) You cannot assign range by just setting an "=" sign
CurCell_2 = CurCell_2.Offset(1,0)
Change it to
Set CurCell_2 = CurCell_2.Offset(1,0)
5) Always specify full declarations when working with two or more objects so that there is less confusion. Your code can also be written as
Option Explicit
Sub trial()
Dim wb1 As Workbook, wb2 As Workbook
Dim ws1 As Worksheet, ws2 As Worksheet
Dim Group As Range, Mat As Range
Dim CurCell_1 As Range, CurCell_2 As Range
Application.ScreenUpdating = False
'~~> Change as applicable
Set wb1 = Workbooks("My_WB_1")
Set wb2 = Workbooks("My_WB_2")
Set ws1 = wb1.Sheets("My_Sheet")
Set ws2 = wb2.Sheets("Sheet2") '<~~ Change as required
For Each Group In ws1.Range("B4:P4")
'~~> Why this?
Set CurCell_2 = ws2.Range("B4")
For Each Mat In ws1.Range("A5:A29")
Set CurCell_1 = ws1.Cells(Mat.Row, Group.Column)
If Not IsEmpty(CurCell_1) Then
CurCell_2.Value = CurCell_1.Value
Set CurCell_2 = CurCell_2.Offset(1)
End If
Next
Next
Application.ScreenUpdating = True
End Sub

Answer 2

Workbooks("My_WB_2").Worksheets(CStr(Group.Value)).CurCell_2.Value
This will not work, since CurCell_2 is not a method of Worksheet, but a variable. Replace by
Workbooks("My_WB_2").Worksheets(CStr(Group.Value)).Range("B4").Value