For your temp use a VECTOR (if you wnat to use it global)

VECTOR* name;

Is just a declaration of a pointer without memory(NULL at the beginning, causes random read/write into memory).

And for your skill use:

#define move_x skill2

that should work(if not, post more code pls)

And Lite-c is a better choice than wdl, it has more possibilities

Greets
Rackscha