Change the current target Entity with GUI.

Hello Everyone!

I just started using MCreator and I have a question for you.

I am working on a currency-mod, which is supposed to be used for trades etc.

I am trying to implement a GUI to the whole system, as seen below.

(The "Add" and "Remove Money"-buttons are only for testing, (to see, if the updates work), so just ignore them).

My current struggle is, that i am not sure how to change the targeted entity.

I want to use the 2nd Inputbox in the GUI to change the target entity to the selected player.

Any ideas on how to do that?