Making a unit perform a spell

[neckcuttabob]

How do you make a unit use a spell with a trigger, I know you can make them use most of the spells in the game already but I have my own spell I need it to do. The built in trigger for casting spells looks like this.

Unit - Order (Picked unit) to Night Elf Demon Hunter - Metamorphosis

I tried using a custom script wrote up like that but it doesn't work.
Any ideas?

 

[the_ideal]

That should work, just make sure
1) you are using the "Pick every unit" function so that there actually is a picked unit for your action to cast the spell for.
2) the unit has metamorphosis or a spell based off of it
3) the unit has the required mana
4) you have an event that makes sense and that will run

Why don't you right click the name of your trigger, click "copy as text" and paste it here so I can see it?

 

[adeoin]

like this

Event-  *X* seconds Of Game Time
Condition-NONE
Action-
Unit-Add Ability Metamorphisis
Unit-Order *Your Unit* To Cast Metamorphisis

The words in stars are the adjustable and changeble ones.
Sorry this is hand written.
There are three different kinds of order unit commands in the trigger editor

1.target a unit(Ex. Storm Bolt/Acid Bomb etc)
2.target a point(Ex. Shockwave/Cluster Rocket etc)
3.no target(Ex. War Stomp/ Metamorphisis/ Thunder Clap etc)

Make shure u use the correct one

I hope this helped you ^^