BlzSetUnitAttackCooldown

Parameters
whichUnit unit
cooldown real
weaponIndex integer
comment

Set a unit’s base Attack Cooldown, weapon index can be either 0 and 1 (a unit can have two different attacks) at runtime.

patch

1.29.2.9231

Source
common.j (suggest an edit or discuss on Github)
return type
nothing
Source code
native BlzSetUnitAttackCooldown                    takes unit whichUnit, real cooldown, integer weaponIndex returns nothing