Undo Button

[RChoudhary]

I am trying to create undo button with the same functionality of Undo action, but in my vi i dont know whre is the problem coming, i am using case structure and shift register to retain the previous values but the values from shoft registers are not passing properly.

Below i am attaching the vi

[Ranjeet_Singh]

Can you upload the VI in 2011 format. I will change there only

[RChoudhary]

Thanks Ranjeet_Singh for the reply,

Below i am attaching the vi in 2011 format

[altenbach]

Your loop spins millions of time per second and when you press undo, the history value has become equal to the string value because you cannot change the string this fast. You need to use an event structure. You also should use a local variable instead of a value property node. Less overhead.

See how far you get....

[altenbach · Accepted solution]

Here is one possibility.

[RChoudhary]

Thanks altenbach for reply,

the vi is working fine for me.