One way, and I know there are other ways that may be better suited, anyhow, for a quicky until then:
Mouse moves over hotspot way when in Look mode.
1: Draw a hotspot area much bigger than you need where you want the mouse image to change (above region)
2: Draw a much smaller hotspot area inside the bigger hotspot area.
3: Use 'Mouse moves over hotspot' in the smaller hotspot events pane.
4: In the hotspot events pane where you want cursor to change put:
mouse.ChangeModeGraphic(eModeLookat, 1241); // change 1241 to your arrow sprite.
5: To change mouse back to default Lookat put this in the bigger hotspot events pane mouse over:
mouse.ChangeModeGraphic(eModeLookat, 233); // image of you default Lookat sprite
This example works only if you are using the Look Mode.
Don't forget to give the smaller hotspot description a name ie Exit... Leave the larger hotspot description blank.
You could of course use an object and control on / off instead.
Meanwhile wait for the bullets to fly