saving a program under a package manually

Hi ,

I developed a selection screen in which the program name and the package are the inputs need to be given.

i entered my program name , and also selected the package , where package is defined as 'tdevc-devclass'

Now i want the program that i entered to be saved in the particular package i selected from f4 help.

i debugged the standard sap program for se38 transaction(SAPLWBABAP) , but still didn't get the exact point where the input program that we gave is getting saved under a package?