How can I edit Mystery Gift files (Gen 4)?

[Clefairy Normal]

I used Grovyle91's program, but any of the versions didn't allow me to edit the mystery gift file.

I want to edit a mystery gift file, so I can make a custom mystery gift for the gen 4 games.

I want it so that the mystery gift gender and nature will be random; I imported my .pkm save file to an earlier version of the mystery gift editor, but it wouldn't let me edit the gender, nature, or the species.

I want one where I can edit the species and the nature.

Thanks for your help!

[Delta Blast Burn]

You could try editing the pgt file.

[theSLAYER]

yeah the program allows you to edit the event, just edit the PGT