and uh..that's pretty much the only way you can get experience to work.
Effect: Create object: Player X: militia
^^ that line is included because the player doesn't want to hear the "unit created" sound.
And place that unit..over an area the hero has already been to.
If you want to give the player experience if he kills more than 1 unit, then you increase the kill ratio to that number and create that number of units in that location.
And it's MUCH better if you use REMOVE OBJECT rather than kill object because the player will be able to hear that kill noise.