State-chart execute do operation doesn't work

[blabla]

Hello
I want to execute all the time an operation with the action do.
I use this to count up something. Here is my code in the section Behaviour.

Code: [Select]

sim.T_WTO = sim.T_WTO+1;
Trace("time = "+ sim.T_WTO );
first time the code will be execute, but after the first run the operation will be not execute again. may be someone can help why it doesn't work

[Eve]

My understanding is that a do operation is executed once on entry to the state. When it completes it sends a completion event to the state machine. It can also be interrupted by leaving the state.

What it doesn't do, is loop.