//suitelet
          form.clientScriptModulePath = './clientFunctionsScript.js';
          var z = ['123', '321'];
          form.addButton({ id : 'custpage_excel', label : 'Test', functionName : 'test(' + z + ')' });
		  
//clientscript
define([],
    function() {
        function pageInit(context) {

        }
        function test(a){
          console.log(a)
        }
        return {
            pageInit: pageInit,
            test : test
        };
    });