Once again many thanks.
I saw what you have done, later I will change all code and send you feedback.
I will never get this solution alone, with you help I will increase my knowldge in labview programming.
Sorry, I could not understand your message.
I meant that not using labels for your front panel objects not only makes it difficult for humans to understand your code, it could also cause confusion in the compiler, which is never a good thing.
Doing this changing in vi with help of Paolo, I could understand your comment. I need to put the label again to creat the even structures.
Many many years ago I start with LB Basic I, after that I learn with by myself and helps in this forum.
I am a researcher, and I need to do the tests, create VIs to help me in this researches.
I feel sad that our students does not enter in LB programming and University do not "open ways" to start with it and since some years do not pay anymore the licenses.
That's why I am a fighter to still using LB, and because we have a lot of hardware from NI.