unanswered Help with Pokemon Rate of Appearance [Platinum]

[skullzbeast]

I have made two ROMs in the past, one of LeafGreen, one of Yellow; both do relatively the same thing (enable to capture all pokemon within reason). Using RBY Wild Pokemon Editor for Yellow and Advancemap 1.92 for LeafGreen, I was able to do this. I now intend to do the same for Platinum.

In Yellow, when changing a wild pokemon's chance for appearance, one can only allow it to appear at one specific level for that appearance. In LeafGreen, one can set a range of levels for that pokemon to appear at. I have attempted to use PPRE and Spikey's editor for Platinum, and both show that pokemon found when walking can only appear at one specific level per appearance (just as in Yellow), except for pokemon found in water.

Is the game made so that only one level can be found, or is it just the editors that impose this limitation? And is there a tool or loophole around this issue?