Executing Case Structure Once in While Loop LABVIEW -

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i'm trying run vi in such when time has been elapsed in while-loop structure, pop out 3 button dialogue box in front panel letting me choose 3 different options yes, no , cancel. "yes" button proceed elapsed time count in while-loop, "no" button stop vi operation , "cancel" button close dialogue box , continue running vi. trying let dialogue box pop-out once when elapsed time reached 3 seconds, somehow pop-ing out because it's been meeting condition in while-loop. in labview me configuration? i'm using 2013 version of labview. appreciated help.

my labview vi structure: my labview vi structure

this code not want.

while loop have stop before popup. popup outside of loop after popup vi stopped.

insert popup loop, put there case , put popup inside case. connect time has elapsed boolean case conditional terminal. make sure run vi using arrow not continuous run option.


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