Can`t get value from time to time

Hello everyone.

I want to get "Auto-Scale" value under "Warp Stabilizer VFX" effect.

All my footages has been stabilized and have "Auto-scale" value.

It is strange, but this code doesn`t work properly.

Some alerts are coming with empty values.

var comp = app.project.activeItem; for (i = 1; i <= comp.numLayers; i++) {           var warp_Stab = comp.layer(i).property("Effects")("Warp Stabilizer VFX");    var layerName = comp.layer(i).name;                                    if (warp_Stab != null){                     var auto_Scale =  comp.layer(i)("Effects")("Warp Stabilizer VFX")("ADBE SubspaceStabilizer-0017").name.toString();          alert(auto_Scale);}}