Checking last checkbox value

One way would be to use a script that's called in the Mouse Up event of each check box that sets the value of a (hidden) text field to the value of the check box. It could be something like:

// Function in a document-level script

function setLastVal() {

    // Get the value of the check box that triggered this function

    var val = event.target.value;

    // Set the value of the text field to this value

    if (val !== "Off") {

        getField("LAST_CB_VAL").value = val;

    }

}

where "LAST_CB_VAL" is the name of the text field that holds the most recently selected check box value. To retrieve it, just get the value of this text field. You would have to call this function in the Mouse Up event of each check box like this:

// Mouse Up script of checkbox

setLastVal();

It would be tedious to manually do this, but you can use the following script to automate it:

// Set the Mouse Up script for all of the check boxes

var sJS = "getField(\"LAST_CB_VAL\").value = val;";

for (var i = 1; i <= 40; i += 1) {

     getField("r" + i).setAction("MouseUp", sJS);

}

This can either be the Mouse Up script of a temporary button or can be entered, selected, and run in the interactive JavaScript console (Ctrl+J).