how to use a variable from visual_logic.js?

I want to do the following:
app.controls = prevControls;
the problem is that prevControls is created by puzzles
and of course this doesn’t work
Function('app', 'v3d', 'VARS', 'PROC', ('app.controls = prevControls;'))(appInstance, v3d, VARS, PROC);

Verge3D, you should add a new puzzle like Comment puzzle but without comment symbols /* */ to write code directly into visual_logic.js

p.s. Solved! VARS.prevControls works :)
Function('app', 'v3d', 'VARS', 'PROC', ('app.controls = VARS.prevControls;'))(appInstance, v3d, VARS, PROC);