How can i get user's input value for graph index ?

[pdapolo]

In my vi ,I display a Graph within few plots. I want user select the plot index,then I deal with it in my program,how can get the plot index value in my program ?

[ian_fung]

Hi

Here is an example in my previous post .

Read also this thread

[pdapolo]

Hi ian fung,

 Thanks for your help,but i still don't known how to invoke the plots index value when user change it.