[Trigger] Upgrade Items

[Jesky]

Can anyone give me the trigger like on "battle tanks war" map that can upgrade an item (for eg: there is an item called "Cannon 1" on hero inven slot 1 and when you click the "Cannon 1" it will upgraded to "Cannon 2" with some gold requirement to upgrade it and have some upgrade time processes display. After upgrading, the item on hero inven slot 1 will be "Cannon 2".)

Please anyone help me

 

[defskull]

Try this.

 

[Jesky]

It's almost like i want, but what i mean is when the item on the inventory is clicked (like using ability from item), it will upgrading the clicked item. overall, thank you so much for your help