X-Dimension 2-1

[DQ8MAN]

I've finally got back into Disgaea 4 and I've tried doing the X-Dimension levels. So far, so good. Beat chapter 1 with little trouble. But now I can't beat 2-1. There's just the two friggin' huge walls that I can't go over! Can someone care to tell me how I'm supposed to get to it? None of my characters can jump nor throw that high.

[greenzsaber]

Need either high JMP or skills that move units around. Spear and Fist skills can do this. Also a really highh tower might be able to make it through the walls.

[DQ8MAN]

Alright, thanks for the help.