Sorry for not mentioning this before.If I assign Terminal=false nothing happens.If it is set to true , then a blank white window comes and disappears.

so a terminal window (like bash) is popping up and disappearing

This means your program probably isn't running at all (or terminating early), is there a setting to keep the window open (there should be)?

I hope the program is running..I tried removing the perl in Exec path in the above program..then an errors comes.. Details: Failed to execute child process "/home/yathayed/yedukondalu/programs/perl/advanced/tk/hotel_bill.pl" (No such file or directory)