Display message to user from sub vi to main vi

[gbvdh]

Hi,

I have got a question of which I am pretty sure it has come across before, but I could not find it via the search function nor with Google.

On my main vi I have got a link to a sub vi, this sub vi checks something and then gives a message to the user. The next step in the sub vi depends on what the users input on the message is. But when I am running my main vi the display (of course) does not come up, because I haven't got a link between the two. 

Is there any way to send the message to the main vi and send the action back to the sub vi?

Thanks

[Alain_S · Accepted solution]

Since everything is happening in the sub vi, why do you want to go back to the main vi?

Do you use the "Prompt user for input" express vi to get an input from the user?

Can you post your code or make some dummy vi's to visualize your problem?