thank you sir have allowed, Sir I am now trying to finish my thesis and my professor told me to use feap, because of limited funds, I use feappv the current version, but my professor told me to modify the feappv to be nonlinear, I'm very difficult to modify because the my basic is not a linguist computer programming, therefore my professor suggested using his subroutine file feappv 2000 that he had modifications so his feappv 2000 can be nonlinear, but after I made the subroutine file feappv current version according to the my professor subroutine and after adjust the symbol of the programming language fortran in 2000 with now, my feap can not display the output of a displacement etc, I think there are differences in the naming of the variables used in feappv 2000 with now version so it can not be connected between the files subroutine me by subroutine my professor with the file code program feappv now, great my hope to Prof. Taylor to able to publish or upload the program again feappv 2000 so I can compare the variables used in feappv 2000 and run my professor subroutine to feappv program now version, thanks.
