expression2 HeLp! plzz

pk iim makeing a wire mech idk why

but
i want to use hydrolys (sorry on spelling)

is there a way where i can press 1 key and make the length go up and another to make it go down

if so can u enplane in detail i may spell like shit but i can understand things easy

This is the wrong place to ask that question, try wiremod.com.

also is there a add on i can get to help with it

Dude seriously learn to spell.

dude shut up i know already