Use of Icons in SAPUI5

Hi there,

today I've tryed to use the iconset (icon font) that comes with SAPUI5, but it gives me some error. I Tryed the following:

var aNames = sap.ui.core.IconPool.getIconNames();

aNames is "sap-icon://accidental-leave".

Now I tryed to use this in a button:

new sap.ui.core.Icon( {                        src : sap.ui.core.IconPool.getIconURI( aNames[0] ),                        size : "32px",                        color : "#333333",                        activeColor : "white",                        activeBackgroundColor : "#333333",                        hoverColor : "#eeeeee",                        hoverBackgroundColor : "#666666",                        width : "60px",                    } ).addStyleClass( "fontIcon" ),                    tooltip : oBundle.getText( 'quotationsView.quotationsTable.toolbar.delete' ),                    press : oController.deleteQuote                } )

But this gives me an error:

sap-ui-core.js (Zeile 55)