ah! thank you! I didn't think to use half words! (ok, I did for a sec but didn't know the command :P)

but! it still didn't work :P

I'm trying this one now:
Code:
ldr r0,=0x021D88FE
ldrh r2,[r0]
add r1,r2,#0x1
strh r1,[r0]
bx  r14
but it didn't work either