Updating ol.layer.Tile parameters in OpenLayers 3.9.0

Question

I have a TileWMS:

var mapWMSTile = new ol.source.TileWMS(
            {
                url: '.....',
                params: {'LAYERS': 'l1,l2', VERSION: '1.3.0', 'TILED': true},
                serverType: 'mapserver'
            });

        var fieldTile = new ol.layer.Tile(
            {
                source: mapWMSTile,
                name: 'fieldTile'
            });

Now I want to add a layers to my WMS parameters (e.g. add l3 in 'LAYERS'). Is this possible?

I have tried the below codes without success:

First try:

mapWMSTile.updateParams(
                {
                    params: {'LAYERS': 'l3', VERSION: '1.3.0', 'TILED': true}
                });

Second try:

fieldTile.getSource().updateParams({'LAYERS': 'l3', VERSION: '1.3.0', 'TILED': true});

I am using OpenLayers 3.9.0.

Answer 1

mapWMSTile.updateParams({
    'LAYERS': 'l3',
    'VERSION': '1.3.0',
    'TILED': true
});