Possible to require signature/notify users based on entry to other fields?

[NMPSG]

I'm attempting to use a pdf form to create a document that requires signatures based on the total value of the entries to the other fields.  For example, if the sum of the items in the fields is <$1000, it only requires the signature of the user filling out the form. If the sum is >$1000, an additional signature is required.  

Is there a way to only require a signature based on the above criteria, and to notify the individual responsible for the additional signature if the criteria is met? 

Thanks!!!

[try67]

Yes. As the custom validation script of the sum field enter the following (adjust the field names as needed):

if (event.value>1000) {
	app.alert("A second signature is required.",3);
	this.getField("Signature2").required = true;
} else this.getField("Signature2").required = false;

Note that the "required" property is only validated when the file is submitted, though.