Checkbox event

Hello,
Let’s say I have 2 checkboxes. Is there a way to trigger an event so that when the user checks one, the other one gets unchecked?
Thank you in advance.

Checkbox2 := NOT Checkbox1; // :slight_smile:

Or:
Checkbox1_R_TRIG(CLK:=Checkbox1);
IF Checkbox1_R_TRIG.Q THEN
Checkbox2 := FALSE;
END_IF
// Now, the boxes are not locked towards one another.