[SOLVED] How can I add a transition to a renpy.show_screen statement?

[Thailandian]

I have a task-list screen that I want to open, both from a button and from within the script. As well as opening the screen and hiding the button, there will be other house-keeping to do, so I decided it would be better to write a Python function for the routine. Here is the relevant code:

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init python:
	def openToDo():
	        renpy.hide_screen("to_do_list_button")
        	renpy.show_screen("game_ch01_tasks")
	        renpy.restart_interaction()

That works as expected, but I would like to add a transition. According to the documentation, the python equivalent to "with dissolve" is:

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renpy.with_statement(trans=dissolve)

but I can't find any simple examples of how or where to place that code. I tried both before and after the renpy.show_screen statements, but got an error message: Exception: Cannot start an interaction in the middle of an interaction without creating a new context.

I sort of understand that, but then where should the code go?

[Remix]

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        	renpy.show_screen("game_ch01_tasks")
        	renpy.transition(dissolve)
	        renpy.restart_interaction()

[Thailandian]

Thanks Remix - that did it!

But now I'm curious - the official renpy documentation on both of these functions is pretty scant, but I still can't quite understand why it's not possible to use renpy.with_statement() in this context. It seemed at least one logical choice, if not the logical choice.