Hi isabel, try using "Application.ScreenUpdating = False" To Turn Off at
the start of code. and "Application.Calculation = xlCalculationManual" To
turn off the automatic calculation
at the beginning of the code
see example:

Dim u As Integer, v As Integer
u = Range("Months").Value - 1
Application.ScreenUpdating = False 'To Turn Off at the start of code.
Application.Calculation = xlCalculationManual  'To turn off the
automatic calculationIf u > 1 Then
    For v = 1 To u - 1
    Application.Goto Range("ColumnLong"), True
    Selection.Insert Shift:=xlDown, CopyOrigin:=xlFormatFromLeftOrAbove
    Application.Goto Range("ColumnFormulas"), True
    Selection.Copy
    Selection.Offset(0, -2).Select
    Selection.PasteSpecial Paste:=xlFormulas, Operation:=xlNone, SkipBlanks:= _
        False, Transpose:=False
    Application.CutCopyMode = False
    Next v

    ElseEnd If
Application.ScreenUpdating = True 'To Turn on at the end of the code.
Application.Calculation = xlCalculationAutomatic 'To turn On the
automatic calculation


Regards.



2015-09-11 13:31 GMT-03:00 Isabel Cristina Ortiz <iort...@gmail.com>:

> Hello,
> I have been working on a workbook. It is a cash flow and macro helps me to
> change the numbers of years (columns) because each project needs different
> time periods.
> What I do is that I have two columns named as "ColumnLong" and
> "ColumnFormulas". The first one is empty and only serves as a reference
> point to add more cells to the left to it, according to the number of
> months of the cash flow.
> Then, I always check the number of months on a specific cell named
> "Months" and I have a loop, it insert a column left to "ColumnLong", then
> goes to "ColumnFormulas" and it paste it into the new column which is two
> columns left to "ColumnFormulas".
>
> What I need is a simpler code because I have several loops similar to this
> one and I am having memory problems.
> I have been working on some recommendations I found on
> http://www.excelitems.com/2010/12/optimize-vba-code-for-faster-macros.html
> but wasn't able to apply to this code.
>
> I hope you can help me.
> Best regards,
> Isabel
>
>
> This is the code I am using:
>
> Dim u As Integer, v As Integer
> u = Range("Months").Value - 1
>
> If u > 1 Then
>     For v = 1 To u - 1
>     Application.Goto Range("ColumnLong"), True
>     Selection.Insert Shift:=xlDown, CopyOrigin:=xlFormatFromLeftOrAbove
>     Application.Goto Range("ColumnFormulas"), True
>     Selection.Copy
>     Selection.Offset(0,   - 2).Select
>     Selection.PasteSpecial Paste:=xlFormulas, Operation:=xlNone,
> SkipBlanks:= _
>         False, Transpose:=False
>     Application.CutCopyMode = False
>     Next v
>
>     Else
> End If
>
>
>
>
>
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