XMC4800 Pin Interrupt

Question

I can't get an Interrupt to work with the XMC4800 Controller.

The rising edge of Pin 0.9 is supposed to trigger the interrupt, please tell me where i am mistaking:

    //Setting p0.9 as Input
XMC_GPIO_SetMode(XMC_GPIO_PORT0, 9,XMC_GPIO_MODE_INPUT_PULL_DOWN);

//ERU Config
XMC_ERU_ETL_CONFIG_t eruInit;
eruInit.input_b = ERU0_ETL1_INPUTB_P0_9;
eruInit.edge_detection = XMC_ERU_ETL_EDGE_DETECTION_RISING;
eruInit.enable_output_trigger = true;
eruInit.output_trigger_channel = XMC_ERU_ETL_OUTPUT_TRIGGER_CHANNEL0;



//OGU Config
XMC_ERU_OGU_CONFIG_t oguInit;
oguInit.service_request = XMC_ERU_OGU_SERVICE_REQUEST_ON_TRIGGER;

//ERU and OGU Init:
XMC_ERU_ETL_Init(ERU0_ETL1, &eruInit);
XMC_ERU_OGU_Init(ERU0_OGU0, &oguInit);

//enable Interrupt
NVIC_SetPriority(ERU0_0_IRQn,3);
NVIC_EnableIRQ(ERU0_0_IRQn);



and then my IRQ Handler:

void ERU0_0_IRQHandler(void)
{

    //set breakpoint and be happy when the code arrives here

}

Do I use the right ERU, ETL, OGU? Is everything configured properly? I read something that I have to call a Method "ClearEventStatus" in xmc4800, but I don't know what could be a valid argument.