you want the append object command...syntax
append object "ollie.x",current_object_number,last_frame_plus_1_of_his_anim
that adds the animation "ollie.x" to the end of the animation for the object with the number current_object_number, than you use the play object command with the correct values for start frame and end frame, you then have just the one object with two animations you can play the whole thing with just play object, or sections of either animation as you want, cheers.
Mentor.
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