Names into array to update multilistbox

I'm trying to evaluate if some materials have some options on or off, until there the script works and it prints the name of the materials that im evaluating, "print m.name". But I need to update a list box with that m.name to show the result in a rollout, could not find any solution to that, the solutions i found its using "collect" and works before getting the names from the meditmaterials, but i already have them, so how i can add it to the listbox item:#()

Thanks in Advanced for your help.