One time Message in While Loop

[Steve1]

I'm trying to have a message appear only once when a boolean switch is turned on. The switch is in a While loop that controls instruments. Is my approach (see attachment) the best one or is there a simpler way?
The code is in Labview 7.1

Thanks,

Steve

[tbob]

Change the mechanical action of the switch to Latch when Pressed. Then you can simplify as shown in the attached vi.

[Steve1]

The "Read a Message" button also turns on the instrument in the frame. Is there a way to keep the switch on and have a one time message tell the operator to "set the voltage" but not have so much code. I've modified the VI to better explain what I want it to do.

[Chaos]

Something like this? Its just a round about idea using shift registers...
Didnt include the loop for the instrument control for clarity.

[Chaos]

Mrr... editing a message would be a nice feature