I solved the problem. Since I did not know and I’m more than a week to read posts on various blogs.
I remembered prashaddey to me with a few lines of code to solve the case.
@shanebp thx.
I know, but how you can select multiple options at the same time.
now works if you press ctrl and choose the option. Is there or how to do, there is no need to hold the Ctrl key http://s17.postimg.org/r22yls5y7/dropmenu.png