Quick references changer  
With this tool you will be able to modify in your formula the references towards a determined cell by references towards other specific cell.
For Example in the following case if you want to change the references in the formula from A1 range.
1)Select A1 range .
Press the button Add 5 times to add 5 text boxes which are necessary for the following example.
2)Enter respective values of the references to search (2,A,$C$7,Sheet1,Sheet3!$G$6) in each one of the text.
3) Now enter the correspondng values to the references for which you want to replace respectively.
4)Click on the Apply in selection button.

Finally this is the result
References in the formula from A1 range have been modified.

Note: The Undo opcion will be available with the name undo_changer.