What causes my state machine stop working?

[billko]

I suggest you return to the original code and show us that code instead.  It seems that the original code is probably just fine, or maybe needs some minor tweaks.  You are probably solving a problem that doesn't exist.

[edmonton]

Hi Bilko,

Control test 1.vi is my original state machine that has 21 cases, it shows every thing properly. 

while control test 0.vi has 17 cases, it does not show case name, it shows a case number for every case. Both of them can work in the same way. The issue is that control test0.vi has very low readability due to lack of case name.

Regards,

Gu