Adding Masklayer.hide_select to a pie menu

Hi there,
just thougt I want to learn a bit of Python and got my feet wet with Pie Menus.
Great thing so far. It´s all easy peasy with operators but I want to add the prop mask hide_select.
I´ve absolute no Idea how to accomplish this, if it´s even possible. Got my Google-Mojo working but hadn´t have any luck. Which doesn´t mean, that I could have found a solution and just searched for the terms. Remember these are my babysteps in coding.

I will be thankfull for any info on this. wheter it´s a code-snippet or a link to a doc, tut or anything else.
Will read for knowledge :wink:

Greetings,

I am a little unsure about what you mean …