VBA stops running when value is written in a cell - vba

Question

I am organizing a dirty text in an organised table. And this code stops when the cell the marked line is completed. Can you help me to make it continuing the loop?
Private Sub CommandButton1_Click()
Dim sh As Worksheet
Dim sh7 As Worksheet
Dim CNAME As String
Set sh = Worksheets("Sheet6")
Set sh7 = Worksheets("Sheet7")
lr = sh.Cells(Rows.Count, 1).End(xlUp).Row
For n = 1 To lr
If InStr(1, sh.Cells(n, 1), "CALL:") = 1 Then
CNAME = sh.Cells(n, 7).Value
Ci = sh.Cells(n + 1, 7).Value
Cpd = sh.Cells(n + 1, 7).Value
Else
If InStr(1, sh.Cells(n, 1), "Topic:") = 1 Then
T = sh.Cells(n, 2)
Tpd = sh.Cells(n + 1, 2)
Types = sh.Cells(n + 4, 2)
DM = sh.Cells(n + 5, 2)
D = sh.Cells(n + 5, 4)
OD = sh.Cells(n + 6, 2)
lr7 = sh7.Cells(Rows.Count, 1).End(xlUp).Row
sh7.Cells(lr7 + 1, 1).Value = CNAME '********This is the last line it runs.
sh7.Cells(lr7 + 1, 2).Value = Ci
sh7.Cells(lr7 + 1, 3).Value = Cpd
sh7.Cells(lr7 + 1, 4).Value = T
sh7.Cells(lr7 + 1, 5).Value = Tpd
sh7.Cells(lr7 + 1, 6).Value = Types
sh7.Cells(lr7 + 1, 7).Value = DM
sh7.Cells(lr7 + 1, 8).Value = D
sh7.Cells(lr7 + 1, 9).Value = OD
End If
End If
Next n
End Sub

Answer 1

You should get in the habit of defining all variables and supplying a default value.
EDIT:
It seems my original conclusion was incorrect. Upon further inspection I see what might be an issue in your code. Both times where you are trying to get the last row, you are using Rows.Count as a parameter.
Maybe change these
lr = sh.Cells(Rows.Count, 1).End(xlUp).Row
lr7 = sh7.Cells(Rows.Count, 1).End(xlUp).Row
To this (note that I use the sheet variable in the first param)
lr = sh.Cells(sh.Rows.Count, 1).End(xlUp).Row
lr7 = sh7.Cells(sh7.Rows.Count, 1).End(xlUp).Row