The Dink Network

hey, i'm developing with dink, but I'm having some trouble, please help

i have a rock, and when the player pushes it, it should move to a location depending on the value of a variable, for example the player's strength.

So the script is as follows:

void main(void)
{
int &direct;
sp_speed(&current_sprite, 1);
sp_hard(&current_sprite, 0);
draw_hard_map();
}

void push(void)
{
&direct = sp_dir(1, -1);
if (&mydir == 6)
{
move(&current_sprite, 6, &strength, 1);
}
}

however, the rock will not move at all. is it possible to use variables like that in this game or not? What would be even better if i could put

move(&current_sprite, 6, &location += 5, 1);

in the script, so i could make a variable storing the current location of the rock (in coordinates) so the player can push the rock 5 pixels per time.

if anyone can help me it would be much appreciated.