How to call function from another specific workbook in VBA?

I would like to know if there is a way to call a VBA function or method from another specified workbook's module as it is possible for a specific worksheet without using the Application.Run

For the worksheet I can call for example :

ActiveSheet.MyTest() 

if MyTest is defined in the sheet module

But I would like to call a function which is defined in a module

I tried :

ActiveWorkbook.MyTestModule()
ActiveWorkbook.VBProject.VBComponents("MyModule").MyTestModule(myArg)

which don't work generating an error Object does not support this method

I could call

Application.Run(ActiveWorkbook.name & "!MyTestModule", myArg)

But I am not sure of the error handling of the Application.Run and I would find cleaner to run directly the method