need help on a simple condition

[jig7c]

how do i reduce the bottom code to make it more suitable
i want the condition to be

killing unit is a hero and random integer 1 to 100 less than or equal to 10....

10% chance the killing hero will benefit from the actions...

 private function Conditions takes nothing returns boolean
    if ( not ( IsUnitType(GetKillingUnit(), UNIT_TYPE_HERO) == true ) ) then
        return false
    endif
    if ( not ( GetRandomInt(1, 100) <= 10 ) ) then
        return false
    endif
    return true
endfunction