conditional required field

I'm new to javascript. I've browsed the forum and tried every solution that I've come across here and yet still stuck with the mySaveAs function giving me the same error no matter what my button script is in my AcroForm.  I'm not able to figure out how to resolve this error. Appreciate all the help and assistance. Thanks in advance.

ERROR:

UnsupportedValueError: Value is unsupported. ===> Parameter cPath.
Doc.saveAs:7:Field Save:Mouse Up

Below are my Scripts.

Folder level script:

var mySaveAs = app.trustedFunction(

function(doc,path) {

app.beginPriv();

doc.saveAs(path);

app.endPriv();

}
);

myTrustedSpecialTaskFunc = app.trustedFunction(

function(doc,path) {

app.beginPriv();

try {

mySaveAs(doc,path);

} catch (e) {

app.alert("Error During Save - " + e);

}

app.endPriv();

}
);

Mouse-up Button script:
//
// Before saving the data, make sure that all required
// fields are valid
//
function myDateSTring(){
return util.printd("mm/dd/yyyy h:MMtt", new Date());
}
if(FormValidFields())
{

var directory = "/C/Users/aUsers/Folder/Subfolder/";

var SignedOffBy = this.getField('SignedOffBy');
if (this.getField("SignedOffBy").value == "SignedOffBy.valueAsString"){
SignedOffBy = SignedOffBy.valueAsString;
}
var myFileName = SignedOffBy + " - " + myDateSTring() + ".pdf";
var mySaveAs = directory + myFileName;
if (typeof(mySaveAs) == "function") {
mySaveAs(this, directory, SignedOffBy +"-"+ myDateSTring()+".pdf");
app.alert("This Form " + SignedOffBy +"-"+ myDateSTring()+ " has saved successfully to the following location: /C/Users/aUsers/folder/subfolder/" , 3);
} else {
app.alert("Missing Save Function. Please contact forms administrator ");
}

}

For this solution I'm assuming that by (00:05), you mean 5 minutes. The general method is to create a hidden field and add a calculation script that finds the time difference and then sets the required property of the dropdown based on the result.

// Get time values in milliseconds

var time1 = util.scand("..Time Format...", this.getField("time1").value).getTime();

var time2 = util.scand("..Time Format...", this.getField("time2").value).getTime();

// Get difference in minutes

var nDiffMin = (time1-time2)/60000;

this.getField("drop1").required = (nDiffMin > 5);