delete entire column of keyframes.jsfl How to achieve？

Hi,

Here is an example that clears all keyframes at the current frame:

(function(){

	var isKeyFrame = function( fr, fn ){
		return ( fr.startFrame === fn );		
	};
	
	var doc = fl.getDocumentDOM(),
		tml = doc.getTimeline(), i, xframe,
		cf = tml.currentFrame, cf1 = cf + 1,
		tmlSel = [];

		
	for( i = 0; i < tml.layers.length; i++ ){
		xframe = tml.layers[ i ].frames[ cf ];
		if( ! xframe ) continue;
		if( ! isKeyFrame( xframe, cf ) ) continue;
		tmlSel.push( i, cf, cf1 );
	}
	
	tml.setSelectedFrames( tmlSel, true );
	tml.clearKeyframes();

})();