Radio Button, Check Boxes Conditional for Required Text Field

I desperately need help. I am a complete novice with scripts, but I've seen these formulas (below) in several threads and they seem to have worked for others.  I want to have a text field required if a radio button (in one instance) or a checkbox (in another instance) is selected. Another post indicated that it doesn't work with "Bulk Send". I'm not using that feature. I am selecting "Fill & Sign" from the side-panel menu and sending the form to one email address. I've also tried it by selecting "Request E-signatures" from the side panel. Neither one works. When said radio button or checkbox is selected the fields do not become "required". Even if I email the form with the trigger radio button or checkbox already selected... it will not become "required". It is showing as "required" if I select the button/checkbox in Preview mode and then switch to edit (Prepare form).  So the scripts are "working"... I think. Something is getting lost though when the form is emailed via Fill & Sign.

For the RADIO BUTTON, I have placed a Custom Calculation Script in the Text field. When I send the form for signatures, the desired text field does not become "required" when selected. (I've also tried placing a mouse-up action-JavaScript on the radio button.)

This is the information and the subsequent script for the required text field triggered by the RADIO BUTTON:

Radio Button Group: PracExOption

Radio Button Name: PracExYESspecial

Practice Example FORM FIELD PROPERTIES:

• Field Name: PracEx
• General Tab: "Required" is unchecked (tried checked also)
• Calculate Tab: Custom calculation script is selected
• SCRIPT:

event.target.required = (this.getField("PracExOption").valueAsString=="PracExYESspecial");

For the CHECKBOXES, the script that I used was applied to the checkbox action (MouseUp-- run a JavaScript). When the form was sent for signatures, checking the box did not make the targeted field become "required". (I also tried placing a custom calculation script in the required text field.)

CHECKBOX PROPERTIES:

General Tab:

• Checkbox Name: OtherProd
• Corresponding Form Field Name: OtherProdReq
• “Required” is unchecked (tried checked also)

Actions Tab:

• TRIGGER: Mouse Up:
• ACTION: Run a Java Script
• JAVA SCRIPT: this.getField("OtherProdReq").required = event.target.value!="Off";

Any guidance and insight would be much appreciated.