}
private void connectViewer(final IChartViewer viewer) {
disconnectViewer(viewer);
TangoKey keyActuator_1_1 = new TangoKey();
TangoKeyTool.registerAttribute(keyActuator_1_1, DEVICE, "actuator_1_1");
TangoKey keyData01 = new TangoKey();
TangoKeyTool.registerAttribute(keyData01, DEVICE, "data_01");
TangoKey keyData02 = new TangoKey();
TangoKeyTool.registerAttribute(keyData02, DEVICE, "data_02");
TangoKey keyData03 = new TangoKey();
TangoKeyTool.registerAttribute(keyData03, DEVICE, "data_03");
TangoKey keyActuator_2_1 = new TangoKey();
TangoKeyTool.registerAttribute(keyActuator_2_1, DEVICE, "actuator_2_1");
TangoKey keyActuator_1_2 = new TangoKey();
TangoKeyTool.registerAttribute(keyActuator_1_2, DEVICE, "actuator_1_2");
TangoKey keyFitter = new TangoKey();
TangoKeyTool.registerAttribute(keyFitter, "ICA/SALSA/FIT.1", "fittedDataY");
TangoKey keyCrash = new TangoKey();
TangoKeyTool.registerAttribute(keyCrash, "ICA/SALSA/FIT.1", "fittedFunctionParameters");
IKey dualKey = ChartViewerBox.createDualKey(keyActuator_1_1, keyData03);
chartBox.connectWidget(viewer, dualKey);
// chartBox.connectWidget(viewer, keyData01);