Stateflow chart coverage not 100% when only state entry action is executed

I have a model, where I have added an entry action (en: x=0;) in a state say A and used the same as condition ( [x==0]) to exit the state A. In this case, as soon the state A is entered, the entry condition is executed and immediately, the state A is exited because of the condition. In this case, coverage results show that the state A is not executed. When I change the action in state A from en: to du:, then coverage results show that state is executed.

Does it mean that, all states have to be active for alteast two timesteps?

Thanks in advance.

[Jon]

Not sure exactly what you're asking, but perhaps you could use a dummy variable:

if x == 0
   dummy = 1;
end

while dummy == 1
  execute commands that update x here
  if x == 0
     dummy = 0;
  end
end

Can also use the "break" command instead of the "dummy=0" line if you want to exit the loop immediately.