Read Global/local variable from teststand and update in Labview

Hi,

I am using Teststand simple user interface . I have to update a string indicator on the front panel by reading station global variable. This variable will be updated in client/application sequence file. which location  I can write this part of code in simple user interface(Asking inside which state of the state machine in  simple user interface code) that will help me to update string indicator.

Regards,

Anand