Trigger event once layer is loaded

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var pixelProjection = new ol.proj.Projection({ code: 'pixel', units: 'pixels', extent: [0, 0, width, height]});var layerNC = new ol.layer.Image({ source: new ol.source.ImageStatic({ url: '../cartes/img/' + newMapFileName, imageSize: [width, height], projection: pixelProjection, imageExtent: pixelProjection.getExtent() }) }), layerVG = new ol.layer.Image({ source: new ol.source.ImageStatic({ url: '../cartes/img/' + oldMapFileName, imageSize: [width, height], projection: pixelProjection, imageExtent: pixelProjection.getExtent() }) });var map = new ol.Map({ layers: [ layerNC, layerVG ], target: 'interactiveMap', controls: [], view: new ol.View({ projection: pixelProjection, center: ol.extent.getCenter(pixelProjection.getExtent()), zoom: 1.75, maxZoom: 3, minZoom: 0 })});layerVG.on("change", function(){ console.log("loaded");});I am trying to make the layer event work and i cant seem to make it fire. Even when i try with moveend, nothing seems to be working. I want to have an event fire when the image (layer) is loaded for the first time



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