Change Units (max upgraded) to other Units

[xsilentkillx]

I have a game what is like a tower defence.
There you can catch units and upgrade them.

Question / Problem:
There will be also stronger Units outside of the catch area that he can only get through a command (Trigger Chat message) he need a max upgraded unit for it.


Example:
Only Unit A Max upgraded needed for Stronger Unit Z.
A Player write the command in the chat: Unit A Max upgraded will be removed and Stronger Unit Z will be casted in his area.


Can someone help me to get the right trigger for it?

 

[Wark]

There you can catch units and upgrade them.

By catch, do you mean take control of them and use them?
And for this command, do you want it to work only when the player owns "unit A"?

Unit Z will be casted in his area.

By "casted", do you mean "unit Z will replace unit A"?

 

[xsilentkillx]

If you catch one you have the control of them yes and can use them.
yes it should only work if the player owns Unit A.

And also yes Unit Z will replace Unit A.

Sorry for the bad explain.