Making Hide an ability

[JuggaloAssasin]

I have been trying to make Hide an ability that costs mana, and only allows the unit to be shadowmelded for a certain number of seconds, increasing every level, everytime I make the ability and fill out the Duration fields and Mana cost fields, it still acts like regular Hide - not costing any mana, activating during night while stationary etc.

 

[darkassaisin]

go in object editor and go to abitlities and look for hide then somehwere in there it will talk about mana costs