error 1 occured in sub VI

[crossrulz · Accepted solution]

The value of the combobox is not going to update when you update the Strings[] property.  You might want to do some logic to set a "default" value as you update the Strings[] and pass that value into your Get Data VI.  I will often just use the first allowed string (index array with no index wired to it).

[Student_LV]

Hello

I indexed the array "sheets name" and wired the string  to the "get sheet data " and it works well, no more race condition. 

I thank you so much for the solution you suggested to me.