Making targeting aliases using * and %1

I use to know how to use these aliases but its been years since I've played muds. Im playing a mud that is D&D based and I have a thief that uses backstab and sap. Im trying to figure out how to make an alias that when I type: Sap (mob) I will auto equip my leather sap and sap the target and in the same alias wield my knife after the target is knocked out. Im not sure what I am doing wrong I know I used * and %1 in the alias before but I forgot the placement and exact syntax for them. If anyone knows how to do this please help me. Thank you.