Switch off alarm trigger mode "falling edge" in discrete alarms

Is there any possibility to switch off alarm trigger mode "falling edge" in discrete alarms configured in Tia Portal ?

I have an alarm configured as discrete and I want to print a message on the screen when my bit changes from zero to one - and it works fine. But, when this bit changes back from one to zero, a message is printed again - is there any way to switch off this falling edge detection? I have nowhere found trigger mode for discrete alarms. I suppose that there has to be somewhere sth like this

I use in Properites, General , Alarm buffer and columns sorting descending

Pls help me

Peter