copying ranges from workbooks (without folder path version) - vba

Question

I've recently been looking for ways to speed up copying data from one worksheet to another. And I came across this nice piece of code (however this was posted in 2013).
Could you please help? I don't want to specify any path to workbooks (like in the example below). I have both worksheets open and would like to address them by filename.
I've tried changing "workbooks.open" to "window("xxx").activate" but that doesn't work.
thank you!
Sub foo()
Dim x As Workbook
Dim y As Workbook
'## Open both workbooks first:
Set x = Workbooks.Open(" path to copying book ")
Set y = Workbooks.Open(" path to destination book ")
x.Sheets("name of copying sheet").Range("A1").Copy
y.Sheets("sheetname").Range("A1").PasteSpecial
End Sub

Answer 1

Sub foo()
Dim x As Workbook
Dim y As Workbook
'Replace the text between the "" with the exact name of the workbook
Set x = Workbooks("ActualNameOfWorkBook.xls")
Set y = Workbooks("ActualNameOfOtherWorkBook.xls")
x.Sheets("name of copying sheet").Range("A1").Copy
y.Sheets("sheetname").Range("A1").PasteSpecial
End Sub

Answer 2

When using PasteSpecial you need to add the XlPasteTypewhat (what parameter/s from the copied range you want to use). Some options of XlPasteTypewhat are: xlPasteAll , xlPasteFormulas, xlPasteValues etc.
You can read more about it at MSDN.
In the example below I am using xlPasteAll.
Code
Sub foo()
Dim x As Workbook
Dim y As Workbook
'## Open both workbooks first:
Set x = Workbooks.Open("file_name_x.xslx") '<-- don;t forget to add the extension, .xslx or .xlsm
Set y = Workbooks.Open("file_name_y.xslx") '<-- don;t forget to add the extension, .xslx or .xlsm
x.Sheets("name of copying sheet").Range("A1").Copy
y.Sheets("sheetname").Range("A1").PasteSpecial xlPasteAll '<-- add parameter after the PasteSpecial
End Sub