Simple question about program

2023-06-27T15:39:46.954000Z

Hello guys,
I am new at this forum and a beginner in codesys.

I am working on a small project, in which there are two lamps(Red L1, Green L2) and a button(T1).

The red lamp should be on for at least 5s and max 10s. If a button is pressed the red lamp should be off and th green lamp on after 3s.

The green phase should last for 5 s and then the red phase should start again.

I did write the following programm and no error is shown, but unfortunately it does not work.
I would be really grateful for any kind of help

PROGRAM Aufgabe2
VAR
state:UINT:=1;
R_Trig_Taster:R_TRIG;
timer3s:TON;
timer5s:TON;
timer10s:TON;

END_VAR

R_Trig_Taster(CLK:=GVL.T1);

CASE state OF
1://red phase
GVL.L1:=TRUE;
GVL.L2:=FALSE;
timer5s(IN:=TRUE,PT:=T#5S);
timer10s(IN:=TRUE,PT:=T#10S);

IF timer5s.Q=TRUE THEN
WHILE timer10s.Q=FALSE DO

 IF R_trig_Taster.Q=TRUE THEN

timer3s(IN:=TRUE,PT:=T#3S);
 IF timer3s.Q=TRUE THEN
 state:=2;
 timer3s(IN:=FALSE,PT:=T#3S);
 timer5s(IN:=FALSE,PT:=T#5S);
timer10s(IN:=FALSE,PT:=T#10S);
 END_IF

END_IF

END_WHILE

END_IF
IF timer10s.Q=TRUE THEN
state:=2;
timer5s(IN:=FALSE,PT:=T#5S);
timer10s(IN:=FALSE,PT:=T#10S);

END_IF

2://green phase
GVL.L1:=0;
GVL.L2:=1;
timer5s(IN:=TRUE,PT:=T#5S);
IF timer5s.Q=TRUE THEN
state:=1;
timer5s(IN:=FALSE,PT:=T#5S);
END_IF

END_CASE

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Simple question about program