Read/write in a variable using his refnum

[User002]

Hi,

I have and VI and a subVI. In the VI I have a boolean variable an a reference to that boolean variable. The subVI have an input to that reference (see the examples). Now, here come my question, in the subVI can I read and write the boolean value of the variable in the VI. Can I do? How?

Thanks.

[pacific · Accepted solution]

Hi kiftren,

Just as you used the reference on the "Register For Events" node, you can wire the reference to a property/invoke node (You can find these on the "Application Control" pallete.) Select the value property. With your current settings, the "value" property will return a variant. This is because of the "mechanical action" setting on your boolean in the main VI. Change the mechanical action to  "Switch when released". The "value" property now returns/accepts true and false.

[User002]

Hi pacific,

I try your solution and function correctly. If anybody want the code of pacific´s solution is attached in this message.

Thanks pacific

Mensaje editado por kiftren