Send a signal after three input fields have all been filled out

repost from discord

Is it possible to send a signal to do something after 3 input boxes have been filled out?

Maybe something like this would work?

This is what I have in the function node:

if(Inputs.First !== undefined && Inputs.First != "" &&
    Inputs.Second !== undefined && Inputs.Second != "" &&
    Inputs.Third !== undefined && Inputs.Third != "") {

    Outputs.AllFilledOut()
}