I am trying to get the text range globally on MacOS from Accessibility API, AXUIElementCopyAttributeValue function. But having an error converting AXValue to CFTypeRef.

This snippet I am referring to

Variables:

var focusedElement: CFTypeRef?

var rangeValue: AXValue? = nil

First Attempt:

if AXUIElementCopyAttributeValue(
   focusedElement as! AXUIElement,
   kAXSelectedTextRangeAttribute as CFString,
   (CFTypeRef *)&rangeValue) == AXError.success {

   } /* Compile error: Cannot convert value of type 'AXValue' to expected argument type 'UnsafeMutablePointer<CFTypeRef?>' (aka 'UnsafeMutablePointer<Optional<AnyObject>>') */

Second Attempt:

if AXUIElementCopyAttributeValue(
    focusedElement as! AXUIElement,
    kAXSelectedTextRangeAttribute as CFString, 
    ((rangeValue as CFTypeRef) as? UnsafeMutablePointer<CFTypeRef?>)!)
    == AXError.success {

}         /* Throw Error: Could not cast value of type 'NSNull' (0x7fdf2d8a75a8) to 'Swift.UnsafeMutablePointer<Swift.Optional<Swift.AnyObject>>' */

How to achieve this in Swift?