Macro To Select Columns Specified In A Cell Using Text String

I have a cell in workbook X on Sheet1 (cell AB3) that states which columns should be exported from workbook X on Sheet3 to a new workbook. The value of cell AB3 on Sheet1 changes based on what a user selects in some check boxes on Sheet1. I would like my macro to read the value of cell AB3 and interpret it is a range reference of which columns to copy from Sheet3 into a new workbook. The problem I'm having is knowing what line(s) of code I would use in VB to read cell AB3 as a range and what kind of referencing rules I need cell AB3 to contain. Right now this is what the cell looks like to the user:

Code: Sheet3'(A:A,B:B,E:E,F:F).Select

For cell AB3 to look this way I'm just using some hard coded text, such as the sheet number and .Select, plus some concatenated values in between. Perhaps this text string needs to be modified, but I'm also wondering what I would use in my macro to reference the cell and read it as reference to which columns to select in Sheet3.