Thank you Basole for your message!
I have been already using your recommendation on my code, but it still 
takes a lot of memory.

Regards,
Isabel



On Saturday, September 12, 2015 at 9:20:05 AM UTC-5, Basole wrote:
>
> 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 <ior...@gmail.com 
> <javascript:>>:
>
>> 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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3) Don't post questions regarding breaking or bypassing any security measure.
4) Acknowledge the responses you receive, good or bad.
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