What I do is:
Animations(1,1) = 0
Load object "standing.x",1
Animations(1,2) = total object frames(1)
Append object "running.x",1,total object frames(1)
Animations(1,3) = total object frames(1)
Append object "jumping.x",1,total object frames(1)
Animations(1,4) = total object frames(1)
etc.
Now you've got a nice array of all the frame positions for your animations.
So to stand:
loop object 1,Animations(1,1),Animations(1,2)
To run:
loop object 1,Animations(1,2),Animations(1,3)
To jump:
play object 1,Animations(1,3),Animations(1,4)
Insiiiiiiiiiiiiiiiiiiiiiiiide!