how to freeze frame?

how to i set layer to freeze frame at time?

if there is no direct acess to it can time remap be used somhow?

function timeremap1(a,b,c,d){

    var comp = app.project.item(2); 

    var layer = comp.layer(a); 

    layer.timeRemapEnabled = true; 

    var timeRemapProp = layer.property("ADBE Time Remapping"); 

    var starttime = b

    var endtime = c

    var times = [b, c/d]; 

    var speedup = d

    var values = [0,  c]; 

    timeRemapProp.setValuesAtTimes(times, values); 

}