Loads for a skill

[HeavenlyHero]

Hey guys, do you know how I can get charges on an ability? I specifically need three charges.

Are you familiar with the Shrapnel ability for the sniper in Dota 1? Well, I need charges for it.

 

[Nichilus]

You can't do it normally as far as I know. Only some abilities, like Huntress's Sentinel, support charges.
However if you are on ~1.31+ version, it could be possible to create a custom UI frame that represents the number of charges and show it on the icon of the ability in command panel.
The logic could work like this:

• When unit is trained/created, store its initial number of charges in a global variable/array
• The custom frame would show value/number from the global variable
• When unit casts the spell, decrease value in global variable
• When value in global variable becomes 0, then disable that ability using 'Unit - Disable ability' action or outright remove it.

 

[ThompZon]

If it is exactly 1 unit with this ability in game at the time, it's possible make 4 icons where you just have the number of charges as part of the icon (need to make multiple version of the icon) and then change the icon with the Ability - Set Ability Icon trigger-action. Of course, this will chance the icon for all units having this ability, making this a terrible solution if more than 1 unit can have the ability.
Making custom UI, adding a small number to that ability is probably a better solution, but also pretty annoying.