Making a unit UNSELECTABLE

[MistAssass]

Hi !
Ok ... i made a unit with the scaling value 10 and when i try to move my hero i click on the unit accidentaly ... so if the unit cannot be selected i can move my hero freely ... pls help
How do i make my unit unselectabel ?
Ty !

 

[Restor]

give Locust ability to the unit

 

[MistAssass]

Ty ! ty very much !!!