Fix bug in SFC generated code. Action state was declared in the list of variables to debug, but wasn't stored using structure with flags. This error had side effects that makes Beremiz debug crash.
FUNCTION_BLOCK LAG1
VAR_INPUT
RUN : BOOL ; (* 1 = run, 0 = reset *)
XIN : REAL ; (* Input variable *)
TAU : TIME ; (* Filter time constant *)
CYCLE : TIME ; (* Sampling time interval *)
END_VAR
VAR_OUTPUT XOUT : REAL ; END_VAR (* Filtered output *)
VAR K : REAL ; (* Smoothing constant, 0.0<=K<1.0 *)
END_VAR
IF RUN THEN XOUT := XOUT + K * (XIN - XOUT) ;
ELSE XOUT := XIN ;
K := TIME_TO_REAL(CYCLE) / TIME_TO_REAL(CYCLE + TAU) ;
END_IF ;
END_FUNCTION_BLOCK