Project Manifest

hello, there is a way to change the default manifest for this:

    Manifest-Version: 1.0
    MIDlet-Version: 0.0.1
    MIDlet-Name: Game
    MIDlet-Vendor: EliasWolf
    MIDlet-1: Game, , com.eliaswolf.game.GMIDLet
    MIDlet-Icon: /icon.png
    MicroEdition-Profile: MIDP-2.0
    MicroEdition-Configuration: 
CLDC-1.1