If hero kill neutral hostile unit he won't get experience (Above level 5)!
Solutions:
- Very Easy:
Change player owner (any other except neutral ones)
- Easy but a little bothering:
Change values show on picture
- A little hard:
Create Experience triggers
(Why hard? Well we don't know how your map look, what systems you use, is it GUI or script etc etc)
Here basic trigger action that will be needed in any trigger
-
Hero - Add 1000 experience to (Triggering unit), Show level-up graphics
- Again a little hard:
Create Items (Tome of Experience) that will be dropped when unit dies
(Why hard? Well we again don't know how many units you placed on the ground, did you use any spawn system, how many level you created, you will need large number of items and triggers again if you use spawn or any other summon systems etc etc)
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My suggestion, use 1st one ^^