cannot figure out why error

[Kemper5F9B]

I keep getting these errors. I've gone back and copied/pasted field names exactly, but can't correct. Any guidance greatly appreciated!
TypeError: this.getField(...) is null
11:Field:Mouse Up
TypeError: this.getField(...) is null
31:AcroForm:CkBxOR82040:Annot1:MouseUp:Action1
TypeError: this.getField(...) is null
11:AcroForm:CkBxOR82040:Annot1:MouseUp:Action1
TypeError: this.getField(...) is null
26:Field:Mouse Up

TypeError: this.getField(...) is null
55:AcroForm:CkBxOR82040:Annot1:MouseUp:Action1

Here's the checkbox field 'mouse-op javascript' I'm using.

if (event.target.value == "or") {

// box is checked
this.getField("RBCoOwnerResident82040").display = display.visible;
this.getField("RBCoOwnerCitizen82040").display = display.visible;
this.getField("RBCoOwnerHear82040").display = display.visible;
this.getField("RBCoOwnerType82040").display = display.visible;
this.getField("CoOwnerName82040").display = display.visible;
this.getField("CoOwnerPhone82040").display = display.visible;
this.getField("CoOwnerEmail82040").display = display.visible;
this.getField("CoOwnerSex82040").display = display.visible;
this.getField("CoOwnerDOB82040").display = display.visible;
this.getField("CoOwnerID82040").display = display.visible;
this.getField("CkBxSameMailAddress82040").display = display.visible;
this.getField("CoOwnerMailAddress82040").display = display.visible;
this.getField("CoOwnerMailCity82040").display = display.visible;
this.getField("CoOwnerMailState82040").display = display.visible;
this.getField("CoOwnerMailZipCode82040").display = display.visible;
this.getField("CkBxSameCoOwnerMailAddress82040").display = display.visible;
this.getField("CoOwnerPhysicalAddress82040").display = display.visible;
this.getField("CoOwnerPhysicalCity82040").display = display.visible;
this.getField("CoOwnerPhysicalState82040").display = display.visible;
this.getField("CoOwnerPhysicalZipCode82040").display = display.visible;
this.getField("CoOwnerSignature82040").display = display.visible;
this.getField("CoOwnerSignDate82040").display = display.visible;
this.getField("CoOwnerSignature84490").display = display.visible;
this.getField("CoOwnerSignature84491").display = display.visible;
}
else {

// box is unchecked

this.getField("RBCoOwnerResident82040").display = display.hidden;
this.getField("RBCoOwnerCitizen82040").display = display.hidden;
this.getField("RBCoOwnerHear82040").display = display.hidden;
this.getField("RBCoOwnerType82040").display = display.hidden;
this.getField("CoOwnerName82040").display = display.hidden;
this.getField("CoOwnerPhone82040").display = display.hidden;
this.getField("CoOwnerEmail82040").display = display.hidden;
this.getField("CoOwnerSex82040").display = display.hidden;
this.getField("CoOwnerDOB82040").display = display.hidden;
this.getField("CoOwnerID82040").display = display.hidden;
this.getField("CkBxSameMailAddress82040").display = display.hidden;
this.getField("CoOwnerMailAddress82040").display = display.hidden;
this.getField("CoOwnerMailCity82040").display = display.hidden;
this.getField("CoOwnerMailState82040").display = display.hidden;
this.getField("CoOwnerMailZipCode82040").display = display.hidden;
this.getField("CkBxSameCoOwnerMailAddress82040").display = display.hidden;
this.getField("CoOwnerPhysicalAddress82040").display = display.hidden;
this.getField("CoOwnerPhysicalCity82040").display = display.hidden;
this.getField("CoOwnerPhysicalState82040").display = display.hidden;
this.getField("CoOwnerPhysicalZipCode82040").display = display.hidden;
this.getField("CoOwnerSignature82040").display = display.hidden;
this.getField("CoOwnerSignDate82040").display = display.hidden;
this.getField("CoOwnerSignature84490").display = display.hidden;
this.getField("CoOwnerSignature84491").display = display.hidden;
}

[try67]

Those errors mean you specified an incorrect field name. Go to the number line indicated (11, 31, etc.) and check around it if any of the names you used are not typed correctly. Even a single character off (like "O" instead of "o", or a space) will cause it to fail.

[Kemper5F9B]

Thank you Try67 for your response. Apologize for not returning sooner. I finally just started over with a clean slate, checking each script as I go. Learning how to read the console though! Thank you again for taking your time to lend a helping hand!! Awesome!!!

[Kemper5F9B]

Hi Try67; did that and also cut/pasted names directly into script. Nothing corrected the issue. Removed phone field fomat. Even substitued 'Date' fields with Text fields formatted with a date setting  mm/dd/yyyy. Also tried running the scripts individually. Nothing changed, still the errors I mentioned earlier. Other suggestions? Thanks in advance- kemper

[Bernd Alheit]

You can get the information about the missing fields when you define following function:

function f_getField(name)
{
	var fld = this.getField(name);
	if (!fld) {
		console.show();
		console.println("Missing field: '" + name + "'");
	}
	return fld;
}

Use the function like this:

f = f_getField("RBCoOwnerResident82040");
if (f) f.display = display.visible;

[Thom Parker]

Can you post the form?

[Kemper5F9B]

Thank you Thom for your interest and your response. Apologize for not returning sooner. I finally just started over with a clean slate, checking each script as I go. Learning how to read the console though! Thank you again for taking your time to lend a helping hand!! Thanks for all you do here in the community!!! Just Awesome!!!!

[Kemper5F9B]

Way over my head Bernd! Thank you Bernd for your response. Apologize for not returning sooner. I finally just started over with a clean slate, checking each script as I go. Learning how to read the console though! Thank you again for taking your time to lend a helping hand!! Thanks for all you do here in the community!!!Awesome!!!!