Presets

[#1]

I make preset, when I apply it to a layer, it deletes the other effects from the layer, and puts his own effects on it. How can I do so that the preset doesn't replace the effects on the layer, but adds?

[#2]

I make preset, when I apply it to a layer, it deletes the other effects from the layer, and puts his own effects on it. How can I do so that the preset doesn't replace the effects on the layer, but adds?

[#3]

works the same way as if you add the same effect twice, and it'll overwrite the old one. Instead of using applyPreset() try using addProperty()

layer.property("ADBE Effect Parade")
.addProperty("EffectMatchName")