Unit Checker

[unique.spectral]

Hello guys,i need some help, im working on a survival map and i have 20 wave that attack a base.
for example when first wave come ,second wave timer don't work until all of the first wave units died ,then timer start working for second wave
thanks guys.

 

[Maker]

http://www.hiveworkshop.com/forums/world-editor-help-zone-98/wave-help-253257/
http://www.hiveworkshop.com/forums/world-editor-help-zone-98/scripting-monster-spawn-245085/