How to initialize the variables in the subvi when the main vi running?

[dec04009]

Hi, friends!

Now I am working on a project with labview. I make a main vi  including many subvis.

When the main vi running, I want to reinnitialize the variables in the subvi to zero.

I know that I can realize that  using the local variable when I enter the subvi,

but I want to keep the the values when I left the subvi and saw them when I

click in this subvi again. So, I do not reinitialize the subvi when it runs. But, I

don not know how to reinitialize the indicators in the subvi when I run the main

VI in the first instance. I try to use the global variables, but it seems do not work

well. Would you like to give me some advice? Thanks a lot!

[tbd]

Hi dec,

      If I understand your question, try using the "First Call?" node in your Sub-VI - to initialize values the first time the VI executes every time the top-level VI is Run.

If this doesn't work for you, just post again!

Cheers.

[dec04009]

Thank you for your helpful reply

The First call.vi works well.