I want these elements : Throw Return, Throw Spin, Throw Straight,Etc of this demo game transfer to my game ,but how? Copy the database-system-elements does not work and in the database of material I find nothing,or is there something in the script, but what?

Please use the edit button instead of posting the same thing twice. You also cannot double post within 48 hours ~ Redd

Ummm....just type them into the Elements list under the System tab...

If you're replacing rxdata files, did you re-open the project afterwards?

Simply copying the database over to your game may not work if the previous game's database has common events, switches, variables, and script calls associated with it. If the game is not encrypted, you might be able to manually copy each spell into your own spell list or do as Forever suggested and just create them yourself in the database of your game.