um, I'm not sure about GSBot, but RSBot is...

addpoke <name>,<specie>,<level>,<item>,<move1>,<move2>,<mo ve3>,<move4>

so it's like...

addpoke Miltankerness,miltank,100,Leftovers,Heal Bell,Milk Drink,Body Slam,Shadow Ball

no spaces next to commas btw.