Thank you so much, works a treat, your help is highly appreciated...

I had one issue with the file selection location, if you add selection of source file (A) from a browse option and target file (B) from a browse option it would be easier. location is more dynamic and after merging the file and creating a new file & file should be saved in the save path or browse option to save the created file with the same file name of file "B" adding "_Reviewed".

File Name: A
File Name: B

New created file in the same path or browse to save the file with file name as B_Reviewed

from the above options it would be more easy and flexible to merge columns from any location.

Thanks you so much.... Your help is highly appreciated .....