Toggle Material Parameter by Time

Hello! I face the problem to toggle my API Function by time. 

The case is that i need toggle material parameter form min to max value by N seconds. Instead of it toggle from min to max throughout N time.

Is it possible to add Toggle Action to Behavior or Tween?  

My script.

// -----JS CODE-----
//@input Asset.Material AlphaMat
// @input SceneObject objectWithTweens

var newAlpha = script.AlphaMat.mainPass.AlphaCut;

var toggle = false;
var min = -1; 
var max = 1;

// Enable full screen touches
global.touchSystem.touchBlocking = true;
script.api.togglePar = togglePar;

function togglePar() {
    toggle = !toggle;
    var NewValue = toggle ? min : max;
    script.AlphaMat.mainPass.AlphaCut = NewValue;
}