problem with save file control

[khad]

hi , i have this vi to control a wavelength meter to measure & save reading to a file on my pc

the problem is i need to make the write labview measurment file to be enabled by the Get Lambda swich and at the same time i need the AutoScan to be reading real time (not stop when i push getlambda swith) could you help me please.

[AdnanZ]

Let me just let you know that there is a better way to architect your entire code. Please don't take this as criticism but I really think you should look into event structures, state machine design, queues and notifiers. Have a look at the Producer/Consumer Design (events) and the State Machine patterns by browsing through the templates that are shipped with LabVIEW (File -> New...). Your GUI should be interfaced with using event structures and not polling (like you are doing right now). Implementing a Producer/Consumer design will remove the issue you are facing right now. If you have any questions, please let us know.