hold attack like morrowind

anyone ever play morrowind. im making a rpg and I want my character to be able to hold there punch attack like in morrowind.
like fist back,hold & character will hit harder.
im not too sure how to do this. anyone have a tutorial or tips for this?

it’s a 3 animation state.
Start punch, loop hold, release.

you can use the input’s pressed/released to trigger the states.

ok ill try that. thanks!