Hi there!

The problem I have is as follows: I am using a mass flow source of a certain fluid, and when I have an external connector setting it to 0.5 kg/s, the model works fine. However if I add a Real expression with "if time < 12000 then 0.5 else mflow3" (being mflow3 some other flow calculated in the model), the model stops at second 2 (does not even reach the event!).

Why can this be happening? I could understand that the event causes the problem, but the model is stopping even before that happens.

Thanks in advance

G