#320 Installer does not Prompt root password in Fedora16

[Fila]

I created the setup for Linux using InstallJammer .On that I execute some script for the installation of mariadb.when I doubleclick the installer In ubuntu..it shows the password prompt.but in fedora its not showing the prompt.I did this using Execute external program by making execute as root option as yes. and Prompt for root password yes I used the command sudo sh script.sh in the program commandline. If I execute this installer through terminal after giving the commands su - Its working fine..How I can prompt for root password in fedora16 using InstallJammer?? Please help me