use med to animate the modle, then make a script for your game either at the end of the function main, or, inside of the player script...

code:
________________________________________________________________________________

while(mouse_left == 1){wait(1);

ent_cycle("frame", my.skill50);
my.skill50 += 5 * time;
my.skill50 %= 100;

}

________________________________________________________________________________

frame is the name fo the frame your animating.

have fun, and good luck.

Link.