How do you change the model of a specific unit using triggers

[creyzi4zb12]

Hello!! It's me again. This time I'm having trouble with a map I am making.
How do you change the model of a specific unit using triggers, and without replacing the unit?

 

[YoshiRyu]

double threads are evil, each time you make a double thread, a baby die!

 

[PurplePoot]

You don't. Just use replace, though I know you don't want to.

 

[Dr Super Good]

You can not. And that is final.

 

[YoshiRyu]

he think about morph ability and that's already answered in the other topic

 

[creyzi4zb12]

Morph ability! Yeah tnx a lot now I know how to do it.