DcObject dco = getItem();
FacesContext fc = FacesContext.getCurrentInstance();
VariableResolver vr = fc.getApplication().getVariableResolver();
DcWebImages images = (DcWebImages) vr.resolveVariable(fc, "images");
images.clear();
for (DcField field : dco.getFields()) {
if (field.getFieldType() == ComponentFactory._PICTUREFIELD) {
Picture picture = (Picture) dco.getValue(field.getIndex());