Exporting a Path Variable inside a shell script [duplicate]
Shell scripts run in a subshell (which you define int the first line as #!/bin/bash), any change in the environment is local to that subshell, so, the sourcing of bash_profile affects only the subshell.
To execute the commands in your current shell, use the source command to run the script in your current shell (http://ss64.com/bash/source.html)
e.g.instead of
$ ./myscript.shrun:
$ source ./myscript.sh