UI Script with onLoad and onChange client scripts

Hello everyone

I've been trying to get a UI script working without not much of a success.

SN's documentation in this regards do not cover all aspects of its potential usage. I've gone through all forum posts here, including: this and many others

Can anyone suggest what am I doing wrong ?
UI Script

<scope> = <scope> || {};

<scope>.<name>= (function initializeLibrary(g_form) {

    var _localVariable = '';

    function _localFunction() {
      //do something
    }

    function _localFunction2() {
       //do something
    }
	
    var functionToCall= function doProcessChanges(fieldName) {
         //call local functions
         //call AJAX
	
	};

    return {
        processPhasingChanges: functionToCall
	};
		
})(g_form);

onLoad Client Script order - 100
ScriptLoader.getScripts('<scope>.<name>.jsdbx');

onChange Client Script: order - 200
tried all variations, such as

• <scope>.<name>.processPhasingChanges
• processPhasingChanges
• <name>.processPhasingChanges
  
  

None seems to work. Any help is much appreciated